number.wiki
Number

121

121 is a composite number, odd, a calendar year.

Deficient Number Palindrome Perfect Square Powerful Number Smith Number 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

All divisors (3)
1 · 11 · 121
Aliquot sum (sum of proper divisors): 12
Factor pairs (a × b = 121)
1 × 121
11 × 11
First multiples
121 · 242 · 363 · 484 · 605 · 726 · 847 · 968 · 1,089 · 1,210

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.