12238017312 has 48 divisors (see below), whose sum is σ = 33161087232. Its totient is φ = 3947746560.

The previous prime is 12238017289. The next prime is 12238017317. The reversal of 12238017312 is 21371083221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 12238017312.

It is not an unprimeable number, because it can be changed into a prime (12238017317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2053143 + ... + 2059094.

It is an arithmetic number, because the mean of its divisors is an integer number (690855984).

Almost surely, 2^12238017312 is an apocalyptic number.

12238017312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12238017312 is an abundant number, since it is smaller than the sum of its proper divisors (20923069920).

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

12238017312 is a wasteful number, since it uses less digits than its factorization.

12238017312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112281 (or 4112273 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 12238017312 in words is "twelve billion, two hundred thirty-eight million, seventeen thousand, three hundred twelve".