20220122215121 has 2 divisors, whose sum is σ = 20220122215122. Its totient is φ = 20220122215120.

The previous prime is 20220122215099. The next prime is 20220122215147. The reversal of 20220122215121 is 12151222102202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19501762566400 + 718359648721 = 4416080^2 + 847561^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220122215121 - 2³⁸ = 19945244308177 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220122215621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110061107560 + 10110061107561.

It is an arithmetic number, because the mean of its divisors is an integer number (10110061107561).

Almost surely, 2^{20220122215121} is an apocalyptic number.

It is an amenable number.

20220122215121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220122215121 is an equidigital number, since it uses as much as digits as its factorization.

20220122215121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 20220122215121 its reverse (12151222102202), we get a palindrome (32371344317323).

The spelling of 20220122215121 in words is "twenty trillion, two hundred twenty billion, one hundred twenty-two million, two hundred fifteen thousand, one hundred twenty-one".