12219312920 has 16 divisors (see below), whose sum is σ = 27493454160. Its totient is φ = 4887725152.

The previous prime is 12219312877. The next prime is 12219312947. The reversal of 12219312920 is 2921391221.

It is a happy number.

12219312920 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 an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 152741372 + ... + 152741451.

It is an arithmetic number, because the mean of its divisors is an integer number (1718340885).

Almost surely, 2^12219312920 is an apocalyptic number.

12219312920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12219312920 is an abundant number, since it is smaller than the sum of its proper divisors (15274141240).

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

12219312920 is a wasteful number, since it uses less digits than its factorization.

12219312920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305482834 (or 305482830 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 12219312920 in words is "twelve billion, two hundred nineteen million, three hundred twelve thousand, nine hundred twenty".