12981157922 has 32 divisors (see below), whose sum is σ = 21127154880. Its totient is φ = 5961003840.

The previous prime is 12981157921. The next prime is 12981157939. The reversal of 12981157922 is 22975118921.

12981157922 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12981157921) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 372797 + ... + 406127.

It is an arithmetic number, because the mean of its divisors is an integer number (660223590).

Almost surely, 2^12981157922 is an apocalyptic number.

12981157922 is a deficient number, since it is larger than the sum of its proper divisors (8145996958).

12981157922 is a wasteful number, since it uses less digits than its factorization.

12981157922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33666.

The product of its digits is 181440, while the sum is 47.

The spelling of 12981157922 in words is "twelve billion, nine hundred eighty-one million, one hundred fifty-seven thousand, nine hundred twenty-two".