12131157712 has 10 divisors (see below), whose sum is σ = 23504118098. Its totient is φ = 6065578848.

The previous prime is 12131157691. The next prime is 12131157719. The reversal of 12131157712 is 21775113121.

It can be written as a sum of positive squares in only one way, i.e., 6310078096 + 5821079616 = 79436^2 + 76296^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131157719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 379098663 + ... + 379098694.

Almost surely, 2^12131157712 is an apocalyptic number.

It is an amenable number.

12131157712 is a deficient number, since it is larger than the sum of its proper divisors (11372960386).

12131157712 is an equidigital number, since it uses as much as digits as its factorization.

12131157712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758197365 (or 758197359 counting only the distinct ones).

The product of its digits is 2940, while the sum is 31.

The spelling of 12131157712 in words is "twelve billion, one hundred thirty-one million, one hundred fifty-seven thousand, seven hundred twelve".