22420722356 has 6 divisors (see below), whose sum is σ = 39236264130. Its totient is φ = 11210361176.

The previous prime is 22420722319. The next prime is 22420722397. The reversal of 22420722356 is 65322702422.

It can be written as a sum of positive squares in only one way, i.e., 18782702500 + 3638019856 = 137050^2 + 60316^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802590291 + ... + 2802590298.

It is an arithmetic number, because the mean of its divisors is an integer number (6539377355).

Almost surely, 2^22420722356 is an apocalyptic number.

It is an amenable number.

22420722356 is a deficient number, since it is larger than the sum of its proper divisors (16815541774).

22420722356 is a wasteful number, since it uses less digits than its factorization.

22420722356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605180593 (or 5605180591 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 22420722356 in words is "twenty-two billion, four hundred twenty million, seven hundred twenty-two thousand, three hundred fifty-six".