12622123021 has 2 divisors, whose sum is σ = 12622123022. Its totient is φ = 12622123020.

The previous prime is 12622122973. The next prime is 12622123039. The reversal of 12622123021 is 12032122621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11424616996 + 1197506025 = 106886^2 + 34605^2 .

It is a cyclic number.

It is not a de Polignac number, because 12622123021 - 2⁹ = 12622122509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12622122983 and 12622123001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12622823021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311061510 + 6311061511.

It is an arithmetic number, because the mean of its divisors is an integer number (6311061511).

Almost surely, 2^12622123021 is an apocalyptic number.

It is an amenable number.

12622123021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12622123021 is an equidigital number, since it uses as much as digits as its factorization.

12622123021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12622123021 its reverse (12032122621), we get a palindrome (24654245642).

The spelling of 12622123021 in words is "twelve billion, six hundred twenty-two million, one hundred twenty-three thousand, twenty-one".