123312123120 has 80 divisors (see below), whose sum is σ = 382919241600. Its totient is φ = 32827176192.

The previous prime is 123312123101. The next prime is 123312123131. The reversal of 123312123120 is 21321213321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296770 + ... + 578529.

It is an arithmetic number, because the mean of its divisors is an integer number (4786490520).

Almost surely, 2^123312123120 is an apocalyptic number.

123312123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123312123120 is an abundant number, since it is smaller than the sum of its proper divisors (259607118480).

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

123312123120 is a wasteful number, since it uses less digits than its factorization.

123312123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875902 (or 875896 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123312123120 its reverse (21321213321), we get a palindrome (144633336441).

The spelling of 123312123120 in words is "one hundred twenty-three billion, three hundred twelve million, one hundred twenty-three thousand, one hundred twenty".