123021031112 has 48 divisors (see below), whose sum is σ = 268388795520. Its totient is φ = 52710554400.

The previous prime is 123021031103. The next prime is 123021031123. The reversal of 123021031112 is 211130120321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1685537 + ... + 1757007.

It is an arithmetic number, because the mean of its divisors is an integer number (5591433240).

Almost surely, 2^123021031112 is an apocalyptic number.

It is an amenable number.

123021031112 is an abundant number, since it is smaller than the sum of its proper divisors (145367764408).

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

123021031112 is a wasteful number, since it uses less digits than its factorization.

123021031112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75882 (or 75871 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123021031112 its reverse (211130120321), we get a palindrome (334151151433).

The spelling of 123021031112 in words is "one hundred twenty-three billion, twenty-one million, thirty-one thousand, one hundred twelve".