The number 121

Representation numerals

Greek numeral

ρκαʹ

Arabic numeral

١٢١

Roman numeral

CXXI

Maya numeral

●
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Chinese numeral

一百二十一

Hebrew numeral

קכא
Numeral systems
Binary: 1111001
Septimal (base 7): 232
Octal: 171
Hexadecimal: 79
Base 24: 51
Factorization
121 = 11 × 11
121 has 3 divisors: 1, 11, 121
Sum of all divisors other than 121: 12
121 = 11 2
121 = 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + ... + 21
Sums & differences
Difference of 2 squares: 121 = 612 - 602
Characteristics
121 is a palindromic number in decimal system
121 is a palindromic number in septimal system (232)
Related primes
The 121th prime number is: 661
Previous prime number: 113 — Next prime number: 127

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