122012102021 has 2 divisors, whose sum is σ = 122012102022. Its totient is φ = 122012102020.

The previous prime is 122012101987. The next prime is 122012102053. The reversal of 122012102021 is 120201210221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89377679521 + 32634422500 = 298961^2 + 180650^2 .

It is a cyclic number.

It is not a de Polignac number, because 122012102021 - 2³⁰ = 120938360197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122012101987 and 122012102005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122012102071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61006051010 + 61006051011.

It is an arithmetic number, because the mean of its divisors is an integer number (61006051011).

Almost surely, 2^122012102021 is an apocalyptic number.

It is an amenable number.

122012102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122012102021 is an equidigital number, since it uses as much as digits as its factorization.

122012102021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122012102021 its reverse (120201210221), we get a palindrome (242213312242).

The spelling of 122012102021 in words is "one hundred twenty-two billion, twelve million, one hundred two thousand, twenty-one".