123211032012320 has 384 divisors, whose sum is σ = 356256481996800. Its totient is φ = 39357753126912.

The previous prime is 123211032012319. The next prime is 123211032012329. The reversal of 123211032012320 is 23210230112321.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (123211032012329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 165290687 + ... + 166034433.

It is an arithmetic number, because the mean of its divisors is an integer number (927751255200).

Almost surely, 2^{123211032012320} is an apocalyptic number.

123211032012320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123211032012320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178128240998400).

123211032012320 is an abundant number, since it is smaller than the sum of its proper divisors (233045449984480).

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

123211032012320 is a wasteful number, since it uses less digits than its factorization.

123211032012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743960 (or 743952 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123211032012320 its reverse (23210230112321), we get a palindrome (146421262124641).

The spelling of 123211032012320 in words is "one hundred twenty-three trillion, two hundred eleven billion, thirty-two million, twelve thousand, three hundred twenty".