122 (one hundred twenty-two) is the natural number following 121 and preceding 123.
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Cardinal | one hundred twenty-two | |||
Ordinal | 122nd (one hundred twenty-second) | |||
Factorization | 2 × 61 | |||
Divisors | 1, 2, 61, 122 | |||
Greek numeral | ΡΚΒ´ | |||
Roman numeral | CXXII | |||
Binary | 11110102 | |||
Ternary | 111123 | |||
Senary | 3226 | |||
Octal | 1728 | |||
Duodecimal | A212 | |||
Hexadecimal | 7A16 |
122 is a nontotient since there is no integer with exactly 122 coprimes below it. Nor is there an integer with exactly 122 integers with common factors below it, making 122 a noncototient.
122 is a semiprime.
122 is the sum of squares of the divisors of 11.
φ(122) = φ(σ(122)).
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