222166180 has 48 divisors (see below), whose sum is σ = 480485376. Its totient is φ = 86244480.

The previous prime is 222166169. The next prime is 222166193. The reversal of 222166180 is 81661222.

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, 118450 + ... + 120310.

It is an arithmetic number, because the mean of its divisors is an integer number (10010112).

Almost surely, 2^222166180 is an apocalyptic number.

222166180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222166180 is an abundant number, since it is smaller than the sum of its proper divisors (258319196).

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

222166180 is a wasteful number, since it uses less digits than its factorization.

222166180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 222166180 is about 14905.2400181949. The cubic root of 222166180 is about 605.6559422584.

The spelling of 222166180 in words is "two hundred twenty-two million, one hundred sixty-six thousand, one hundred eighty".