12131112204 has 24 divisors (see below), whose sum is σ = 31451031920. Its totient is φ = 4043704032.

The previous prime is 12131112173. The next prime is 12131112223. The reversal of 12131112204 is 40221113121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56162449 + ... + 56162664.

Almost surely, 2^12131112204 is an apocalyptic number.

It is an amenable number.

12131112204 is an abundant number, since it is smaller than the sum of its proper divisors (19319919716).

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

12131112204 is a wasteful number, since it uses less digits than its factorization.

12131112204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112325126 (or 112325118 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12131112204 its reverse (40221113121), we get a palindrome (52352225325).

The spelling of 12131112204 in words is "twelve billion, one hundred thirty-one million, one hundred twelve thousand, two hundred four".