12208267218 has 16 divisors (see below), whose sum is σ = 27904610880. Its totient is φ = 3488076336.

The previous prime is 12208267157. The next prime is 12208267223. The reversal of 12208267218 is 81276280221.

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, 145336473 + ... + 145336556.

It is an arithmetic number, because the mean of its divisors is an integer number (1744038180).

Almost surely, 2^12208267218 is an apocalyptic number.

12208267218 is an abundant number, since it is smaller than the sum of its proper divisors (15696343662).

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

12208267218 is a wasteful number, since it uses less digits than its factorization.

12208267218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290673041.

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 12208267218 in words is "twelve billion, two hundred eight million, two hundred sixty-seven thousand, two hundred eighteen".