222164166 has 32 divisors (see below), whose sum is σ = 524187648. Its totient is φ = 61427520.

The previous prime is 222164149. The next prime is 222164171. The reversal of 222164166 is 661461222.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84015 + ... + 86618.

It is an arithmetic number, because the mean of its divisors is an integer number (16380864).

Almost surely, 2^222164166 is an apocalyptic number.

222164166 is an abundant number, since it is smaller than the sum of its proper divisors (302023482).

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

222164166 is a wasteful number, since it uses less digits than its factorization.

222164166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170676.

The product of its digits is 6912, while the sum is 30.

The square root of 222164166 is about 14905.1724579087. The cubic root of 222164166 is about 605.6541121048.

The spelling of 222164166 in words is "two hundred twenty-two million, one hundred sixty-four thousand, one hundred sixty-six".