123311101032012 has 12 divisors (see below), whose sum is σ = 287725902408056. Its totient is φ = 41103700344000.

The previous prime is 123311101031939. The next prime is 123311101032061. The reversal of 123311101032012 is 210230101113321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×123311101032012⁴ (a number of 57 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123311101032012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5137962542989 + ... + 5137962543012.

Almost surely, 2^{123311101032012} is an apocalyptic number.

123311101032012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123311101032012 is an abundant number, since it is smaller than the sum of its proper divisors (164414801376044).

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

123311101032012 is a wasteful number, since it uses less digits than its factorization.

123311101032012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275925086008 (or 10275925086006 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 123311101032012 its reverse (210230101113321), we get a palindrome (333541202145333).

The spelling of 123311101032012 in words is "one hundred twenty-three trillion, three hundred eleven billion, one hundred one million, thirty-two thousand, twelve".