122112031990 has 64 divisors (see below), whose sum is σ = 240975326592. Its totient is φ = 44277350400.

The previous prime is 122112031973. The next prime is 122112031991. The reversal of 122112031990 is 99130211221.

It is a super-2 number, since 2×122112031990² (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 (122112031991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5071119 + ... + 5095141.

It is an arithmetic number, because the mean of its divisors is an integer number (3765239478).

Almost surely, 2^122112031990 is an apocalyptic number.

122112031990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122112031990 is a deficient number, since it is larger than the sum of its proper divisors (118863294602).

122112031990 is a wasteful number, since it uses less digits than its factorization.

122112031990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24745.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 122112031990 in words is "one hundred twenty-two billion, one hundred twelve million, thirty-one thousand, nine hundred ninety".