222126372 has 36 divisors (see below), whose sum is σ = 604678620. Its totient is φ = 68346432.

The previous prime is 222126367. The next prime is 222126379. The reversal of 222126372 is 273621222.

222126372 is a `hidden beast` number, since 2 + 2 + 21 + 2 + 637 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46457856 + 175668516 = 6816^2 + 13254^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (222126379) 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 in 11 ways as a sum of consecutive naturals, for example, 236847 + ... + 237782.

Almost surely, 2^222126372 is an apocalyptic number.

It is an amenable number.

222126372 is an abundant number, since it is smaller than the sum of its proper divisors (382552248).

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

222126372 is a wasteful number, since it uses less digits than its factorization.

222126372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474652 (or 474647 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 222126372 is about 14903.9045890666. The cubic root of 222126372 is about 605.6197660473.

Adding to 222126372 its reverse (273621222), we get a palindrome (495747594).

The spelling of 222126372 in words is "two hundred twenty-two million, one hundred twenty-six thousand, three hundred seventy-two".