Number: 221

Facts about the number: 221 is the house number on Baker Street of the fictional London residence of Sherlock Holmes. 221 is sMTP status code for service closing transmission channel. 221 is the sum of nine consecutive prime numbers (11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41). 221 is the number of Hamiltonian planar graphs with 7 vertices. 221 is the sum of five consecutive prime numbers (37 + 41 + 43 + 47 + 53).
The number of digits in the number: \( n \): \( d = \lfloor \log_{10}(n) \rfloor + 1 \)	3
Sum of the digits: \( n \): \( S = \sum_{i=1}^{k} d_i \)	5
Reverse number: \( \text{Reverse}(n) = \sum_{i=1}^{k} d_i \cdot 10^{k-i} \)	0.0045248868778281
Binary number system: \( n = \sum_{i=0}^{k-1} d_i \cdot 2^i \)	101011001111101
Hexadecimal number system: \( n = \sum_{i=0}^{k-1} d_i \cdot 16^i \)	567d
Parity of the number: \( \text{Parity}(n) = n \mod 2 \)	odd
Simplicity of the number: \(\text{IsPrime}(n) = n > 1 \land \forall d \in [2, \sqrt{n}], n \mod d \neq 0\)	false
The square root: \(\sqrt{n} = n^{\frac{1}{2}}\)	14.866068747319
The factorial of the number: \( n!=n \times (n-1) \times (n-2) \times \ldots \times 2 \times 1 \)	0
The sign of the number: \(\text{sign}(n) = \begin{cases} 1, & \text{if } n>0 \ 0, & \text{if } n=0 \ -1, & \text{if } n<0 \end{cases}\)	+
The nearest multiple of 10: \(\text{10}(n) = 10 \times \left\lfloor \frac{n + 5}{10} \right\rfloor\)	0
The nearest multiple of 100: \(\text{100}(n) = 100 \times \left\lfloor \frac{n + 50}{100} \right\rfloor\)	0
Sine: \(\sin(x) = \sum_{n=0}^{\infty} \frac{(-1)^n x^{2n+1}}{(2n+1)!}\)	0.88593879787876
Cosine: \(\cos(x) = \sum_{n=0}^{\infty} \frac{(-1)^n x^{2n}}{(2n)!}\)	0.46380216301042
Tangent: \(\tan(x) = \sum_{n=0}^{\infty} \frac{(-1)^n 2^{2n} (2^{2n} - 1) B_{2n} x^{2n-1}}{(2n)!}\)	1.9101653000675
The square of the number: \(\text{square}(n) = n^2\)	48841
Cubic root: \(\text{}(n) = \sqrt[3]{n}\)	6.0459435960125
Natural logarithm: \(\ln(ab) = \ln(a) + \ln(b)\)	5.3981627015178
Common logarithm: \(\log_{10}(ab) = \log_{10}(a) + \log_{10}(b)\)	2.3443922736851
All divisors of a number: \( D(n) = \{ d \in \mathbb{Z}^+ : n \mod d = 0 \} \)	1, 13, 17, 221
Base64:	MjIxLjQx
SHA1:	1e6f31afb50889359301dfddf9ce209bec872ed9
MD5:	a44fe787af8731dae21303d844a8b2d9
Converts a number to a Roman representation:	CCXXI
Converting the number of seconds to days, hours, minutes and seconds:	days: 0, hours: 0, minutes: 3, seconds: 41.
Converts a number to a date in UNIX time format:
	Chinese:	1970 月 1 星期四
	Spanish:	1970 Enero 1 Jueves
	English:	1970 January 1 Thursday
	Hindi:	1970 जनवरी 1 गुरुवार
	Arab:	1970 يناير 1 الخميس
	Bengal:	1970 জানুয়ারী 1 বৃহস্পতিবার
	Portuguese:	1970 Janeiro 1 Quinta-feira
	Russian:	1970 Январь 1 Четверг
	Japanese:	1970 一月 1 木曜日
	Lahnda:	1970 جنوری 1 جمعرات
	Marathi:	1970 जानेवारी 1 गुरुवार
	Telugu:	1970 జనవరి 1 గురువారం
	Malay:	1970 Januari 1 Khamis
	Turkish:	1970 Ocak 1 Perşembe
	Korean:	1970 1월 1 목요일
	French:	1970 Janvier 1 Jeudi
	German:	1970 Januar 1 Donnerstag
	Vietnamese:	1970 Tháng Một 1 Thứ năm
	Tamil:	1970 ஜனவரி 1 வியாழக்கிழமை
	Urdu:	1970 جنوری 1 جمعرات
	Javanese:	1970 Januari 1 Kemis
	Italian:	1970 Gennaio 1 Giovedì
	Persian:	1970 ژانویه 1 پنج‌شنبه
	Gujaratis:	1970 જાન્યુઆરી 1 ગુરુવાર
Length:
	221 kilometers = 221,000.00 meters
	221 miles = 355,664.14 meters
	221 feet = 67.36 meters
	221 inches = 5.61 meters
	221 yards = 202.08 meters
	221 meters = 0.22 kilometers
	221 meters = 0.14 miles
	221 meters = 725.07 feet
	221 meters = 8,700.79 inches
	221 meters = 241.69 yards
Weight:
	221 pounds = 100.24 kilograms
	221 grams = 0.22 kilograms
	221 ounces = 6.27 kilograms
	221 tons = 200,487.89 kilograms
	221 kilograms = 487.22 pounds
	221 kilograms = 221,000.00 grams
	221 kilograms = 7,795.55 ounces
	221 kilograms = 0.24 tons
Volume:
	221 gallons = 836.58 liters
	221 milliliters = 0.22 liters
	221 cubic meters = 221,000.00 liters
	221 liters = 58.38 gallons
	221 liters = 221,000.00 milliliters
	221 liters = 0.22 cubic meters
Area:
	221 acres = 894,356.06 square meters
	221 hectares = 2,210,000.00 square meters
	221 square feet = 20.53 square meters
	221 square inches = 0.14 square meters
	221 square meters = 0.05 acres
	221 square meters = 0.02 hectares
	221 square meters = 2,378.83 square feet
	221 square meters = 342,550.69 square inches
Temperature:
	221 celsius = 429.80 fahrenheit
	221 celsius = 494.15 kelvin
	221 fahrenheit = 105.00 celsius
	221 fahrenheit = 378.15 kelvin
	221 kelvin = -52.15 celsius
	221 kelvin = -61.87 fahrenheit
Time:
	221 seconds = 3.68 minutes
	221 seconds = 0.06 hours
	221 seconds = 0.00 days
	221 minutes = 13,260.00 seconds
	221 minutes = 3.68 hours
	221 minutes = 0.15 days
	221 hours = 795,600.00 seconds
	221 hours = 13,260.00 minutes
	221 hours = 9.21 days
	221 days = 19,094,400.00 seconds
	221 days = 318,240.00 minutes
	221 days = 5,304.00 hours
Energy:
	221 joules = 52.82 calories
	221 joules = 0.22 kilojoules
	221 joules = 0.06 watt hours
	221 calories = 924.66 joules
	221 calories = 0.92 kilojoules
	221 kilojoules = 221,000.00 joules
	221 kilojoules = 52,820.33 calories
	221 watt hours = 795,600.00 joules
	221 watt hours = 795.60 kilojoules
Information:
	221 bytes = 0.22 kilobytes
	221 kilobytes = 226,304.00 bytes
	221 kilobytes = 0.22 megabytes
	221 megabytes = 226,304.00 kilobytes
	221 megabytes = 0.22 gigabytes
	221 gigabytes = 226,304.00 megabytes
	221 gigabytes = 0.22 terabytes
	221 terabytes = 226,304.00 gigabytes