222451172 has 12 divisors (see below), whose sum is σ = 391441596. Its totient is φ = 110610720.

The previous prime is 222451157. The next prime is 222451211. The reversal of 222451172 is 271154222.

It can be written as a sum of positive squares in 2 ways, for example, as 107661376 + 114789796 = 10376^2 + 10714^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 152903 + ... + 154350.

It is an arithmetic number, because the mean of its divisors is an integer number (32620133).

Almost surely, 2^222451172 is an apocalyptic number.

It is an amenable number.

222451172 is a deficient number, since it is larger than the sum of its proper divisors (168990424).

222451172 is a wasteful number, since it uses less digits than its factorization.

222451172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307438 (or 307436 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 222451172 is about 14914.7970820927. The cubic root of 222451172 is about 605.9148075588.

The spelling of 222451172 in words is "two hundred twenty-two million, four hundred fifty-one thousand, one hundred seventy-two".