222456166 has 4 divisors (see below), whose sum is σ = 333684252. Its totient is φ = 111228082.

The previous prime is 222456151. The next prime is 222456197. The reversal of 222456166 is 661654222.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55614040 + ... + 55614043.

It is an arithmetic number, because the mean of its divisors is an integer number (83421063).

Almost surely, 2^222456166 is an apocalyptic number.

222456166 is a deficient number, since it is larger than the sum of its proper divisors (111228086).

222456166 is a wasteful number, since it uses less digits than its factorization.

222456166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111228085.

The product of its digits is 34560, while the sum is 34.

The square root of 222456166 is about 14914.9644987844. The cubic root of 222456166 is about 605.9193417612.

The spelling of 222456166 in words is "two hundred twenty-two million, four hundred fifty-six thousand, one hundred sixty-six".