222081172 has 6 divisors (see below), whose sum is σ = 388642058. Its totient is φ = 111040584.

The previous prime is 222081163. The next prime is 222081173. The reversal of 222081172 is 271180222.

It can be written as a sum of positive squares in only one way, i.e., 176464656 + 45616516 = 13284^2 + 6754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222081173) by changing a digit.

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, 27760143 + ... + 27760150.

Almost surely, 2^222081172 is an apocalyptic number.

It is an amenable number.

222081172 is a deficient number, since it is larger than the sum of its proper divisors (166560886).

222081172 is a wasteful number, since it uses less digits than its factorization.

222081172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55520297 (or 55520295 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 222081172 is about 14902.3881307662. The cubic root of 222081172 is about 605.5786845222.

The spelling of 222081172 in words is "two hundred twenty-two million, eighty-one thousand, one hundred seventy-two".