12691333124 has 24 divisors (see below), whose sum is σ = 22486131360. Its totient is φ = 6266783744.

The previous prime is 12691333121. The next prime is 12691333147. The reversal of 12691333124 is 42133319621.

It is a super-2 number, since 2×12691333124² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12691333121) 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, 1099487 + ... + 1110969.

It is an arithmetic number, because the mean of its divisors is an integer number (936922140).

Almost surely, 2^12691333124 is an apocalyptic number.

It is an amenable number.

12691333124 is a deficient number, since it is larger than the sum of its proper divisors (9794798236).

12691333124 is a wasteful number, since it uses less digits than its factorization.

12691333124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14899 (or 14897 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The spelling of 12691333124 in words is "twelve billion, six hundred ninety-one million, three hundred thirty-three thousand, one hundred twenty-four".