221002204 has 12 divisors (see below), whose sum is σ = 386863624. Its totient is φ = 110469744.

The previous prime is 221002183. The next prime is 221002211. The reversal of 221002204 is 402200122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16222 + ... + 26554.

Almost surely, 2^221002204 is an apocalyptic number.

It is an amenable number.

221002204 is a deficient number, since it is larger than the sum of its proper divisors (165861420).

221002204 is a wasteful number, since it uses less digits than its factorization.

221002204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15684 (or 15682 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 221002204 is about 14866.1428756756. The cubic root of 221002204 is about 604.5963694377.

Adding to 221002204 its reverse (402200122), we get a palindrome (623202326).

The spelling of 221002204 in words is "two hundred twenty-one million, two thousand, two hundred four".