12238138988 has 12 divisors (see below), whose sum is σ = 21422451960. Its totient is φ = 6117438432.

The previous prime is 12238138967. The next prime is 12238139003. The reversal of 12238138988 is 88983183221.

It is a happy number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390806 + ... + 420957.

It is an arithmetic number, because the mean of its divisors is an integer number (1785204330).

Almost surely, 2^12238138988 is an apocalyptic number.

It is an amenable number.

12238138988 is a deficient number, since it is larger than the sum of its proper divisors (9184312972).

12238138988 is a wasteful number, since it uses less digits than its factorization.

12238138988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815536 (or 815534 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 53.

The spelling of 12238138988 in words is "twelve billion, two hundred thirty-eight million, one hundred thirty-eight thousand, nine hundred eighty-eight".