122439250931 has 2 divisors, whose sum is σ = 122439250932. Its totient is φ = 122439250930.

The previous prime is 122439250897. The next prime is 122439250961. The reversal of 122439250931 is 139052934221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122439250931 - 2¹⁸ = 122438988787 is a prime.

It is a super-2 number, since 2×122439250931² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (122439250961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61219625465 + 61219625466.

It is an arithmetic number, because the mean of its divisors is an integer number (61219625466).

Almost surely, 2^122439250931 is an apocalyptic number.

122439250931 is a deficient number, since it is larger than the sum of its proper divisors (1).

122439250931 is an equidigital number, since it uses as much as digits as its factorization.

122439250931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 122439250931 in words is "one hundred twenty-two billion, four hundred thirty-nine million, two hundred fifty thousand, nine hundred thirty-one".