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.

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.

See also

• List of highways numbered 122
• United Nations Security Council Resolution 122

References

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