122931790812 has 36 divisors (see below), whose sum is σ = 312354340480. Its totient is φ = 40764943872.

The previous prime is 122931790789. The next prime is 122931790819. The reversal of 122931790812 is 218097139221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×122931790812² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122931790819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8839612 + ... + 8853507.

Almost surely, 2^122931790812 is an apocalyptic number.

122931790812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122931790812 is an abundant number, since it is smaller than the sum of its proper divisors (189422549668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122931790812 is a wasteful number, since it uses less digits than its factorization.

122931790812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17693322 (or 17693317 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 122931790812 in words is "one hundred twenty-two billion, nine hundred thirty-one million, seven hundred ninety thousand, eight hundred twelve".