22166212 has 12 divisors (see below), whose sum is σ = 38987200. Its totient is φ = 11027016.

The previous prime is 22166201. The next prime is 22166233. The reversal of 22166212 is 21266122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13128 + ... + 14719.

Almost surely, 2^22166212 is an apocalyptic number.

It is an amenable number.

22166212 is a deficient number, since it is larger than the sum of its proper divisors (16820988).

22166212 is a wasteful number, since it uses less digits than its factorization.

22166212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28050 (or 28048 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 22166212 is about 4708.1006786177. The cubic root of 22166212 is about 280.9078187860.

The spelling of 22166212 in words is "twenty-two million, one hundred sixty-six thousand, two hundred twelve".