622726272121 has 2 divisors, whose sum is σ = 622726272122. Its totient is φ = 622726272120.

The previous prime is 622726272079. The next prime is 622726272127. The reversal of 622726272121 is 121272627226.

622726272121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385654662121 + 237071610000 = 621011^2 + 486900^2 .

It is a cyclic number.

It is not a de Polignac number, because 622726272121 - 2²⁷ = 622592054393 is a prime.

It is not a weakly prime, because it can be changed into another prime (622726272127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311363136060 + 311363136061.

It is an arithmetic number, because the mean of its divisors is an integer number (311363136061).

It is a self-describing number.

Almost surely, 2^622726272121 is an apocalyptic number.

It is an amenable number.

622726272121 is a deficient number, since it is larger than the sum of its proper divisors (1).

622726272121 is an equidigital number, since it uses as much as digits as its factorization.

622726272121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

Adding to 622726272121 its reverse (121272627226), we get a palindrome (743998899347).

The spelling of 622726272121 in words is "six hundred twenty-two billion, seven hundred twenty-six million, two hundred seventy-two thousand, one hundred twenty-one".