222166158 has 16 divisors (see below), whose sum is σ = 459654480. Its totient is φ = 71501696.

The previous prime is 222166157. The next prime is 222166163. The reversal of 222166158 is 851661222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222166157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638235 + ... + 638582.

It is an arithmetic number, because the mean of its divisors is an integer number (28728405).

Almost surely, 2^222166158 is an apocalyptic number.

222166158 is an abundant number, since it is smaller than the sum of its proper divisors (237488322).

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

222166158 is a wasteful number, since it uses less digits than its factorization.

222166158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276851.

The product of its digits is 11520, while the sum is 33.

The square root of 222166158 is about 14905.2392801994. The cubic root of 222166158 is about 605.6559222667.

The spelling of 222166158 in words is "two hundred twenty-two million, one hundred sixty-six thousand, one hundred fifty-eight".