123112312130120 has 32 divisors (see below), whose sum is σ = 277150753077120. Its totient is φ = 49218604712640.

The previous prime is 123112312130117. The next prime is 123112312130153. The reversal of 123112312130120 is 21031213211321.

It is a happy number.

It is a super-2 number, since 2×123112312130120² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 822428582 + ... + 822578261.

It is an arithmetic number, because the mean of its divisors is an integer number (8660961033660).

Almost surely, 2^{123112312130120} is an apocalyptic number.

123112312130120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123112312130120 is an abundant number, since it is smaller than the sum of its proper divisors (154038440947000).

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

123112312130120 is a wasteful number, since it uses less digits than its factorization.

123112312130120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645008725 (or 1645008721 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 123112312130120 its reverse (21031213211321), we get a palindrome (144143525341441).

The spelling of 123112312130120 in words is "one hundred twenty-three trillion, one hundred twelve billion, three hundred twelve million, one hundred thirty thousand, one hundred twenty".