12087912228 has 24 divisors (see below), whose sum is σ = 32234432832. Its totient is φ = 3453689184.

The previous prime is 12087912167. The next prime is 12087912253. The reversal of 12087912228 is 82221978021.

It is a super-2 number, since 2×12087912228² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 12087912228.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71951775 + ... + 71951942.

It is an arithmetic number, because the mean of its divisors is an integer number (1343101368).

Almost surely, 2^12087912228 is an apocalyptic number.

It is an amenable number.

12087912228 is an abundant number, since it is smaller than the sum of its proper divisors (20146520604).

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

12087912228 is a wasteful number, since it uses less digits than its factorization.

12087912228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143903731 (or 143903729 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The spelling of 12087912228 in words is "twelve billion, eighty-seven million, nine hundred twelve thousand, two hundred twenty-eight".