222531152 has 20 divisors (see below), whose sum is σ = 446022420. Its totient is φ = 107428608.

The previous prime is 222531143. The next prime is 222531157. The reversal of 222531152 is 251135222.

It can be written as a sum of positive squares in 2 ways, for example, as 185613376 + 36917776 = 13624^2 + 6076^2 .

It is a super-2 number, since 2×222531152² = 99040227220894208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222531157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239333 + ... + 240260.

It is an arithmetic number, because the mean of its divisors is an integer number (22301121).

Almost surely, 2^222531152 is an apocalyptic number.

It is an amenable number.

222531152 is an abundant number, since it is smaller than the sum of its proper divisors (223491268).

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

222531152 is a wasteful number, since it uses less digits than its factorization.

222531152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479630 (or 479624 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 222531152 is about 14917.4780710414. The cubic root of 222531152 is about 605.9874156420.

Adding to 222531152 its reverse (251135222), we get a palindrome (473666374).

The spelling of 222531152 in words is "two hundred twenty-two million, five hundred thirty-one thousand, one hundred fifty-two".