12189272124 has 24 divisors (see below), whose sum is σ = 28452735360. Its totient is φ = 4061504944.

The previous prime is 12189272089. The next prime is 12189272129. The reversal of 12189272124 is 42127298121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189272129) 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, 165984 + ... + 227879.

It is an arithmetic number, because the mean of its divisors is an integer number (1185530640).

Almost surely, 2^12189272124 is an apocalyptic number.

It is an amenable number.

12189272124 is an abundant number, since it is smaller than the sum of its proper divisors (16263463236).

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

12189272124 is a wasteful number, since it uses less digits than its factorization.

12189272124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396449 (or 396447 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The spelling of 12189272124 in words is "twelve billion, one hundred eighty-nine million, two hundred seventy-two thousand, one hundred twenty-four".