221220421114304 has 28 divisors (see below), whose sum is σ = 439211373380424. Its totient is φ = 110552988451584.

The previous prime is 221220421114291. The next prime is 221220421114307. The reversal of 221220421114304 is 403411124022122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220421114307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893970722 + ... + 894218145.

Almost surely, 2^{221220421114304} is an apocalyptic number.

It is an amenable number.

221220421114304 is a deficient number, since it is larger than the sum of its proper divisors (217990952266120).

221220421114304 is a wasteful number, since it uses less digits than its factorization.

221220421114304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788190812 (or 1788190802 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 221220421114304 its reverse (403411124022122), we get a palindrome (624631545136426).

The spelling of 221220421114304 in words is "two hundred twenty-one trillion, two hundred twenty billion, four hundred twenty-one million, one hundred fourteen thousand, three hundred four".