222312256 has 28 divisors (see below), whose sum is σ = 450543168. Its totient is φ = 108789632.

The previous prime is 222312221. The next prime is 222312257. The reversal of 222312256 is 652213222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222312256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222312257) 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, 33946 + ... + 39961.

Almost surely, 2^222312256 is an apocalyptic number.

It is an amenable number.

222312256 is an abundant number, since it is smaller than the sum of its proper divisors (228230912).

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

222312256 is an equidigital number, since it uses as much as digits as its factorization.

222312256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73966 (or 73956 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 222312256 is about 14910.1393688993. The cubic root of 222312256 is about 605.7886543484.

Adding to 222312256 its reverse (652213222), we get a palindrome (874525478).

The spelling of 222312256 in words is "two hundred twenty-two million, three hundred twelve thousand, two hundred fifty-six".