12165562226 has 32 divisors (see below), whose sum is σ = 18537361920. Its totient is φ = 5987516416.

The previous prime is 12165562217. The next prime is 12165562291. The reversal of 12165562226 is 62226556121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12165562226.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20514986 + ... + 20515578.

It is an arithmetic number, because the mean of its divisors is an integer number (579292560).

Almost surely, 2^12165562226 is an apocalyptic number.

12165562226 is a deficient number, since it is larger than the sum of its proper divisors (6371799694).

12165562226 is a wasteful number, since it uses less digits than its factorization.

12165562226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258.

The product of its digits is 86400, while the sum is 38.

The spelling of 12165562226 in words is "twelve billion, one hundred sixty-five million, five hundred sixty-two thousand, two hundred twenty-six".