222520224 has 24 divisors (see below), whose sum is σ = 584115840. Its totient is φ = 74173376.

The previous prime is 222520223. The next prime is 222520289. The reversal of 222520224 is 422025222.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 222520224.

It is not an unprimeable number, because it can be changed into a prime (222520223) 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, 1158864 + ... + 1159055.

It is an arithmetic number, because the mean of its divisors is an integer number (24338160).

Almost surely, 2^222520224 is an apocalyptic number.

222520224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

222520224 is an abundant number, since it is smaller than the sum of its proper divisors (361595616).

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

222520224 is a wasteful number, since it uses less digits than its factorization.

222520224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317932 (or 2317924 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 222520224 is about 14917.1117847927. Note that the first 3 decimals coincide. The cubic root of 222520224 is about 605.9774959239.

Adding to 222520224 its reverse (422025222), we get a palindrome (644545446).

The spelling of 222520224 in words is "two hundred twenty-two million, five hundred twenty thousand, two hundred twenty-four".