222204660 has 48 divisors (see below), whose sum is σ = 625798656. Its totient is φ = 58909312.

The previous prime is 222204659. The next prime is 222204701. The reversal of 222204660 is 66402222.

It is a self number, because there is not a number n which added to its sum of digits gives 222204660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324 + ... + 21083.

It is an arithmetic number, because the mean of its divisors is an integer number (13037472).

Almost surely, 2^222204660 is an apocalyptic number.

222204660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222204660 is an abundant number, since it is smaller than the sum of its proper divisors (403593996).

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

222204660 is a wasteful number, since it uses less digits than its factorization.

222204660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21592 (or 21590 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 222204660 is about 14906.5307835190. The cubic root of 222204660 is about 605.6909075192.

Adding to 222204660 its reverse (66402222), we get a palindrome (288606882).

The spelling of 222204660 in words is "two hundred twenty-two million, two hundred four thousand, six hundred sixty".