Number
121
121 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 4
- Digital root
- 4
- Palindrome
- Yes
- Divisor count
- 3
- σ(n) — sum of divisors
- 133
Primality
Prime factorization: 11 2
Divisors & multiples
Aliquot sum (sum of proper divisors):
12
Representations
- In words
- one hundred twenty-one
- Ordinal
- 121st
- Roman numeral
- CXXI
- Binary
- 1111001
- Octal
- 171
- Hexadecimal
- 79
Also seen as
ASCII character
As an ASCII codepoint, 121 is y. Printable ASCII character y.
Hex color
#000079
RGB(0, 0, 121)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.121.