222572353861881 has 15 divisors (see below), whose sum is σ = 332484827949813. Its totient is φ = 148381479728100.

The previous prime is 222572353861861. The next prime is 222572353861987. The reversal of 222572353861881 is 188168353275222.

The square root of 222572353861881 is 14918859.

It is a perfect power (a square), and thus also a powerful number.

222572353861881 is a `hidden beast` number, since 2 + 2 + 2 + 5 + 7 + 2 + 3 + 5 + 3 + 8 + 618 + 8 + 1 = 666.

It is not a de Polignac number, because 222572353861881 - 2⁵ = 222572353861849 is a prime.

It is a super-2 number, since 2×222572353861881² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222572353861831) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 133440906 + ... + 135098556.

Almost surely, 2^{222572353861881} is an apocalyptic number.

222572353861881 is the 14918859-th square number.

222572353861881 is the 7459430-th centered octagonal number.

It is an amenable number.

222572353861881 is a deficient number, since it is larger than the sum of its proper divisors (109912474087932).

222572353861881 is an frugal number, since it uses more digits than its factorization.

222572353861881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315314 (or 1657654 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 63.

The spelling of 222572353861881 in words is "two hundred twenty-two trillion, five hundred seventy-two billion, three hundred fifty-three million, eight hundred sixty-one thousand, eight hundred eighty-one".