122

Number
$122$ (one hundred and twenty-two) is:


 * $2 \times 61$


 * The $16$th nontotient after $14, 26, 34, 38, 50, 62, 68, 74, 76, 86, 90, 94, 98, 114, 118$:
 * $\nexists m \in \Z_{>0}: \phi \left({m}\right) = 122$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $10$th noncototient after $10, 26, 34, 50, 52, 58, 86, 100, 116$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 122$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $2$nd even integer that cannot be expressed as the sum of $2$ prime numbers of which the smaller one is $3$, $5$ or $7$.


 * The $23$rd positive integer $n$ such that no factorial of an integer can end with $n$ zeroes.