221421251423622 has 16 divisors (see below), whose sum is σ = 446761463050800. Its totient is φ = 73153923773952.

The previous prime is 221421251423563. The next prime is 221421251423627. The reversal of 221421251423622 is 226324152124122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221421251423627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163290007747 + ... + 163290009102.

It is an arithmetic number, because the mean of its divisors is an integer number (27922591440675).

Almost surely, 2^{221421251423622} is an apocalyptic number.

221421251423622 is an abundant number, since it is smaller than the sum of its proper divisors (225340211627178).

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

221421251423622 is a wasteful number, since it uses less digits than its factorization.

221421251423622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326580016967.

The product of its digits is 184320, while the sum is 39.

The spelling of 221421251423622 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred fifty-one million, four hundred twenty-three thousand, six hundred twenty-two".