221321440304 has 40 divisors (see below), whose sum is σ = 430533569088. Its totient is φ = 110216368640.

The previous prime is 221321440297. The next prime is 221321440339. The reversal of 221321440304 is 403044123122.

It is a super-2 number, since 2×221321440304² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10991654 + ... + 11011770.

Almost surely, 2^221321440304 is an apocalyptic number.

It is an amenable number.

221321440304 is a deficient number, since it is larger than the sum of its proper divisors (209212128784).

221321440304 is a wasteful number, since it uses less digits than its factorization.

221321440304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22853 (or 22847 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 221321440304 its reverse (403044123122), we get a palindrome (624365563426).

The spelling of 221321440304 in words is "two hundred twenty-one billion, three hundred twenty-one million, four hundred forty thousand, three hundred four".