22424604022621 has 4 divisors (see below), whose sum is σ = 22424767138012. Its totient is φ = 22424440907232.

The previous prime is 22424604022619. The next prime is 22424604022627. The reversal of 22424604022621 is 12622040642422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11661808373721 + 10762795648900 = 3414939^2 + 3280670^2 .

It is a cyclic number.

It is not a de Polignac number, because 22424604022621 - 2¹ = 22424604022619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22424604022627) 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, 81351306 + ... + 81626491.

It is an arithmetic number, because the mean of its divisors is an integer number (5606191784503).

Almost surely, 2^{22424604022621} is an apocalyptic number.

It is an amenable number.

22424604022621 is a deficient number, since it is larger than the sum of its proper divisors (163115391).

22424604022621 is a wasteful number, since it uses less digits than its factorization.

22424604022621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163115390.

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 22424604022621 in words is "twenty-two trillion, four hundred twenty-four billion, six hundred four million, twenty-two thousand, six hundred twenty-one".