12031019912920 has 64 divisors (see below), whose sum is σ = 27204324063840. Its totient is φ = 4788502118400.

The previous prime is 12031019912887. The next prime is 12031019912921. The reversal of 12031019912920 is 2921991013021.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031019912921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37152024 + ... + 37474456.

Almost surely, 2^{12031019912920} is an apocalyptic number.

12031019912920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031019912920 is an abundant number, since it is smaller than the sum of its proper divisors (15173304150920).

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

12031019912920 is a wasteful number, since it uses less digits than its factorization.

12031019912920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327076 (or 327072 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 40.

The spelling of 12031019912920 in words is "twelve trillion, thirty-one billion, nineteen million, nine hundred twelve thousand, nine hundred twenty".