123011331000120 has 96 divisors (see below), whose sum is σ = 401532620018400. Its totient is φ = 32659776942336.

The previous prime is 123011331000101. The next prime is 123011331000163. The reversal of 123011331000120 is 21000133110321.

123011331000120 is a `hidden beast` number, since 1 + 230 + 1 + 1 + 3 + 310 + 0 + 0 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123011331000093 and 123011331000102.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 745983372 + ... + 746148251.

It is an arithmetic number, because the mean of its divisors is an integer number (4182631458525).

Almost surely, 2^{123011331000120} is an apocalyptic number.

123011331000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123011331000120 is an abundant number, since it is smaller than the sum of its proper divisors (278521289018280).

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

123011331000120 is a wasteful number, since it uses less digits than its factorization.

123011331000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492131869 (or 1492131862 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123011331000120 its reverse (21000133110321), we get a palindrome (144011464110441).

The spelling of 123011331000120 in words is "one hundred twenty-three trillion, eleven billion, three hundred thirty-one million, one hundred twenty", and thus it is an aban number.