221304043204 has 24 divisors (see below), whose sum is σ = 388313380728. Its totient is φ = 110357544960.

The previous prime is 221304043189. The next prime is 221304043211. The reversal of 221304043204 is 402340403122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17137428100 + 204166615104 = 130910^2 + 451848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5246004 + ... + 5288020.

It is an arithmetic number, because the mean of its divisors is an integer number (16179724197).

Almost surely, 2^221304043204 is an apocalyptic number.

It is an amenable number.

221304043204 is a deficient number, since it is larger than the sum of its proper divisors (167009337524).

221304043204 is a wasteful number, since it uses less digits than its factorization.

221304043204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45495 (or 45493 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 221304043204 its reverse (402340403122), we get a palindrome (623644446326).

The spelling of 221304043204 in words is "two hundred twenty-one billion, three hundred four million, forty-three thousand, two hundred four".