123123211112330 has 64 divisors (see below), whose sum is σ = 260368831296000. Its totient is φ = 41327755806720.

The previous prime is 123123211112203. The next prime is 123123211112351. The reversal of 123123211112330 is 33211112321321.

It is a super-2 number, since 2×123123211112330² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123123211112330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258876986 + ... + 259352154.

It is an arithmetic number, because the mean of its divisors is an integer number (4068262989000).

Almost surely, 2^{123123211112330} is an apocalyptic number.

123123211112330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123123211112330 is an abundant number, since it is smaller than the sum of its proper divisors (137245620183670).

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

123123211112330 is a wasteful number, since it uses less digits than its factorization.

123123211112330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656399.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 123123211112330 its reverse (33211112321321), we get a palindrome (156334323433651).

The spelling of 123123211112330 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, two hundred eleven million, one hundred twelve thousand, three hundred thirty".