222158994 has 16 divisors (see below), whose sum is σ = 448718400. Its totient is φ = 73319600.

The previous prime is 222158971. The next prime is 222158999. The reversal of 222158994 is 499851222.

It is a happy number.

222158994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (222158999) 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, 182694 + ... + 183905.

It is an arithmetic number, because the mean of its divisors is an integer number (28044900).

Almost surely, 2^222158994 is an apocalyptic number.

222158994 is an abundant number, since it is smaller than the sum of its proper divisors (226559406).

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

222158994 is a wasteful number, since it uses less digits than its factorization.

222158994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366705.

The product of its digits is 103680, while the sum is 42.

The square root of 222158994 is about 14904.9989600805. The cubic root of 222158994 is about 605.6494121758.

The spelling of 222158994 in words is "two hundred twenty-two million, one hundred fifty-eight thousand, nine hundred ninety-four".