221422644652344 has 16 divisors (see below), whose sum is σ = 553556611630920. Its totient is φ = 73807548217440.

The previous prime is 221422644652309. The next prime is 221422644652361. The reversal of 221422644652344 is 443256446224122.

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, 4612971763567 + ... + 4612971763614.

Almost surely, 2^{221422644652344} is an apocalyptic number.

221422644652344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221422644652344 is an abundant number, since it is smaller than the sum of its proper divisors (332133966978576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221422644652344 is a wasteful number, since it uses less digits than its factorization.

221422644652344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9225943527190 (or 9225943527186 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 51.

The spelling of 221422644652344 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, six hundred forty-four million, six hundred fifty-two thousand, three hundred forty-four".