22022122621 has 2 divisors, whose sum is σ = 22022122622. Its totient is φ = 22022122620.

The previous prime is 22022122613. The next prime is 22022122637. The reversal of 22022122621 is 12622122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15747740100 + 6274382521 = 125490^2 + 79211^2 .

It is a cyclic number.

It is not a de Polignac number, because 22022122621 - 2³ = 22022122613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22022122592 and 22022122601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22022125621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011061310 + 11011061311.

It is an arithmetic number, because the mean of its divisors is an integer number (11011061311).

Almost surely, 2^22022122621 is an apocalyptic number.

It is an amenable number.

22022122621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022122621 is an equidigital number, since it uses as much as digits as its factorization.

22022122621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22022122621 its reverse (12622122022), we get a palindrome (34644244643).

The spelling of 22022122621 in words is "twenty-two billion, twenty-two million, one hundred twenty-two thousand, six hundred twenty-one".