12997795212 has 18 divisors (see below), whose sum is σ = 32855537988. Its totient is φ = 4332598392.

The previous prime is 12997795211. The next prime is 12997795243. The reversal of 12997795212 is 21259779921.

12997795212 is a `hidden beast` number, since 1 + 29 + 97 + 7 + 9 + 521 + 2 = 666.

12997795212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12997795211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180524898 + ... + 180524969.

It is an arithmetic number, because the mean of its divisors is an integer number (1825307666).

Almost surely, 2^12997795212 is an apocalyptic number.

12997795212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12997795212 is an abundant number, since it is smaller than the sum of its proper divisors (19857742776).

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

12997795212 is a wasteful number, since it uses less digits than its factorization.

12997795212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361049877 (or 361049872 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The spelling of 12997795212 in words is "twelve billion, nine hundred ninety-seven million, seven hundred ninety-five thousand, two hundred twelve".