12133131112 has 32 divisors (see below), whose sum is σ = 23964897600. Its totient is φ = 5742969984.

The previous prime is 12133131091. The next prime is 12133131113. The reversal of 12133131112 is 21113133121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12133131112.

It is not an unprimeable number, because it can be changed into a prime (12133131113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178588 + ... + 236980.

It is an arithmetic number, because the mean of its divisors is an integer number (748903050).

Almost surely, 2^12133131112 is an apocalyptic number.

It is an amenable number.

12133131112 is a deficient number, since it is larger than the sum of its proper divisors (11831766488).

12133131112 is a wasteful number, since it uses less digits than its factorization.

12133131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59785 (or 59781 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

Adding to 12133131112 its reverse (21113133121), we get a palindrome (33246264233).

The spelling of 12133131112 in words is "twelve billion, one hundred thirty-three million, one hundred thirty-one thousand, one hundred twelve".