12238186512 has 40 divisors (see below), whose sum is σ = 31621431456. Its totient is φ = 4078606336.

The previous prime is 12238186511. The next prime is 12238186529. The reversal of 12238186512 is 21568183221.

It is a super-2 number, since 2×12238186512² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12238186511) 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, 259888 + ... + 303344.

Almost surely, 2^12238186512 is an apocalyptic number.

12238186512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12238186512 is an abundant number, since it is smaller than the sum of its proper divisors (19383244944).

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

12238186512 is a wasteful number, since it uses less digits than its factorization.

12238186512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49335 (or 49329 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The spelling of 12238186512 in words is "twelve billion, two hundred thirty-eight million, one hundred eighty-six thousand, five hundred twelve".