12218144372 has 24 divisors (see below), whose sum is σ = 24477950784. Its totient is φ = 5227420032.

The previous prime is 12218144363. The next prime is 12218144401. The reversal of 12218144372 is 27344181221.

It is a congruent number.

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, 355253 + ... + 388124.

It is an arithmetic number, because the mean of its divisors is an integer number (1019914616).

Almost surely, 2^12218144372 is an apocalyptic number.

It is an amenable number.

12218144372 is an abundant number, since it is smaller than the sum of its proper divisors (12259806412).

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

12218144372 is a wasteful number, since it uses less digits than its factorization.

12218144372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743975 (or 743973 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The spelling of 12218144372 in words is "twelve billion, two hundred eighteen million, one hundred forty-four thousand, three hundred seventy-two".