12210987156 has 24 divisors (see below), whose sum is σ = 28975225440. Its totient is φ = 4001340192.

The previous prime is 12210987133. The next prime is 12210987157. The reversal of 12210987156 is 65178901221.

12210987156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210987157) 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 7 ways as a sum of consecutive naturals, for example, 8622871 + ... + 8624286.

It is an arithmetic number, because the mean of its divisors is an integer number (1207301060).

Almost surely, 2^12210987156 is an apocalyptic number.

It is an amenable number.

12210987156 is an abundant number, since it is smaller than the sum of its proper divisors (16764238284).

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

12210987156 is a wasteful number, since it uses less digits than its factorization.

12210987156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17247223 (or 17247221 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 42.

The spelling of 12210987156 in words is "twelve billion, two hundred ten million, nine hundred eighty-seven thousand, one hundred fifty-six".