123011230212012 has 72 divisors (see below), whose sum is σ = 300938542546096. Its totient is φ = 39104588565504.

The previous prime is 123011230212007. The next prime is 123011230212089. The reversal of 123011230212012 is 210212032110321.

It is a super-2 number, since 2×123011230212012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123011230212012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26611393 + ... + 30889944.

Almost surely, 2^{123011230212012} is an apocalyptic number.

123011230212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123011230212012 is an abundant number, since it is smaller than the sum of its proper divisors (177927312334084).

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

123011230212012 is a wasteful number, since it uses less digits than its factorization.

123011230212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57501727 (or 57501702 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 123011230212012 its reverse (210212032110321), we get a palindrome (333223262322333).

The spelling of 123011230212012 in words is "one hundred twenty-three trillion, eleven billion, two hundred thirty million, two hundred twelve thousand, twelve".