122021201021 has 2 divisors, whose sum is σ = 122021201022. Its totient is φ = 122021201020.

The previous prime is 122021200999. The next prime is 122021201039. The reversal of 122021201021 is 120102120221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63171292921 + 58849908100 = 251339^2 + 242590^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021201021 - 2²⁶ = 121954092157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122021200987 and 122021201005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122021201051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010600510 + 61010600511.

It is an arithmetic number, because the mean of its divisors is an integer number (61010600511).

Almost surely, 2^122021201021 is an apocalyptic number.

It is an amenable number.

122021201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021201021 is an equidigital number, since it uses as much as digits as its factorization.

122021201021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 122021201021 its reverse (120102120221), we get a palindrome (242123321242).

The spelling of 122021201021 in words is "one hundred twenty-two billion, twenty-one million, two hundred one thousand, twenty-one".