122310310021 has 2 divisors, whose sum is σ = 122310310022. Its totient is φ = 122310310020.

The previous prime is 122310309997. The next prime is 122310310037. The reversal of 122310310021 is 120013013221.

It is an a-pointer prime, because the next prime (122310310037) can be obtained adding 122310310021 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77467588900 + 44842721121 = 278330^2 + 211761^2 .

It is a cyclic number.

It is not a de Polignac number, because 122310310021 - 2²⁵ = 122276755589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122310309977 and 122310310004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122310310051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61155155010 + 61155155011.

It is an arithmetic number, because the mean of its divisors is an integer number (61155155011).

Almost surely, 2^122310310021 is an apocalyptic number.

It is an amenable number.

122310310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122310310021 is an equidigital number, since it uses as much as digits as its factorization.

122310310021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 122310310021 its reverse (120013013221), we get a palindrome (242323323242).

The spelling of 122310310021 in words is "one hundred twenty-two billion, three hundred ten million, three hundred ten thousand, twenty-one".