12131112011012 has 12 divisors (see below), whose sum is σ = 21233799025740. Its totient is φ = 6064312289376.

The previous prime is 12131112010939. The next prime is 12131112011041. The reversal of 12131112011012 is 21011021113121.

It can be written as a sum of positive squares in 2 ways, for example, as 1411210947136 + 10719901063876 = 1187944^2 + 3274126^2 .

It is a super-2 number, since 2×12131112011012² (a number of 27 digits) contains 22 as substring.

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, 310907087 + ... + 310946102.

It is an arithmetic number, because the mean of its divisors is an integer number (1769483252145).

Almost surely, 2^{12131112011012} is an apocalyptic number.

It is an amenable number.

12131112011012 is a deficient number, since it is larger than the sum of its proper divisors (9102687014728).

12131112011012 is a wasteful number, since it uses less digits than its factorization.

12131112011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621858070 (or 621858068 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 12131112011012 its reverse (21011021113121), we get a palindrome (33142133124133).

The spelling of 12131112011012 in words is "twelve trillion, one hundred thirty-one billion, one hundred twelve million, eleven thousand, twelve".