122 (number)

← 121 123 → 122
← 120 121 122 123 124 125 126 127 128 129 → List of numbers — Integers ← 100 110 120 130 140 150 160 170 180 190 →
Cardinal	one hundred [and] twenty-two
Ordinal	122nd (one hundred [and] twenty-second)
Numeral system	122
Factorization	$2 \cdot 61$
Divisors	1, 2, 61, 122
Roman numeral	CXXII
Binary	1111010₂
Octal	172₈
Duodecimal	A2₁₂
Hexadecimal	7A₁₆

122 (one hundred [and] twenty-two) is the natural number following 121 and preceding 123.

1 In mathematics
2 In telephony
3 In other fields
4 See also
5 References

In mathematics

It 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.

In telephony

The fire emergency telephone number in Austria^[1]
The police emergency telephone number in Egypt
The traffic emergency telephone number in China

In other fields

122 is also:

The atomic number of the chemical element unbibium
The number of men of Michmas at the census (Bible, Nehemiah 7:31)
The age of Jeanne Calment when she died.

References

^ Porter, Darwin; Danforth Prince (2009). Frommer's Austria. Hoboken, New Jersey: Frommer's. p. 482. ISBN 978-0-470-39897-5.

122 (number)

Contents

In mathematics

In telephony

In other fields

See also

References