220221304 has 8 divisors (see below), whose sum is σ = 412914960. Its totient is φ = 110110648.

The previous prime is 220221233. The next prime is 220221341. The reversal of 220221304 is 403122022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13763824 + ... + 13763839.

It is an arithmetic number, because the mean of its divisors is an integer number (51614370).

Almost surely, 2^220221304 is an apocalyptic number.

It is an amenable number.

220221304 is a deficient number, since it is larger than the sum of its proper divisors (192693656).

220221304 is a wasteful number, since it uses less digits than its factorization.

220221304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27527669 (or 27527665 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 220221304 is about 14839.8552553588. The cubic root of 220221304 is about 603.8834255965.

Adding to 220221304 its reverse (403122022), we get a palindrome (623343326).

The spelling of 220221304 in words is "two hundred twenty million, two hundred twenty-one thousand, three hundred four".