122010121021 has 2 divisors, whose sum is σ = 122010121022. Its totient is φ = 122010121020.

The previous prime is 122010120977. The next prime is 122010121073. The reversal of 122010121021 is 120121010221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94673136100 + 27336984921 = 307690^2 + 165339^2 .

It is a cyclic number.

It is not a de Polignac number, because 122010121021 - 2²⁵ = 121976566589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122010120992 and 122010121010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122010121091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61005060510 + 61005060511.

It is an arithmetic number, because the mean of its divisors is an integer number (61005060511).

Almost surely, 2^122010121021 is an apocalyptic number.

It is an amenable number.

122010121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122010121021 is an equidigital number, since it uses as much as digits as its factorization.

122010121021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122010121021 its reverse (120121010221), we get a palindrome (242131131242).

The spelling of 122010121021 in words is "one hundred twenty-two billion, ten million, one hundred twenty-one thousand, twenty-one".