122021012002121 has 2 divisors, whose sum is σ = 122021012002122. Its totient is φ = 122021012002120.

The previous prime is 122021012002117. The next prime is 122021012002199. The reversal of 122021012002121 is 121200210120221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107649672190096 + 14371339812025 = 10375436^2 + 3790955^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021012002121 - 2² = 122021012002117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122021012002121.

It is not a weakly prime, because it can be changed into another prime (122021012004121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010506001060 + 61010506001061.

It is an arithmetic number, because the mean of its divisors is an integer number (61010506001061).

Almost surely, 2^{122021012002121} is an apocalyptic number.

It is an amenable number.

122021012002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021012002121 is an equidigital number, since it uses as much as digits as its factorization.

122021012002121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122021012002121 its reverse (121200210120221), we get a palindrome (243221222122342).

The spelling of 122021012002121 in words is "one hundred twenty-two trillion, twenty-one billion, twelve million, two thousand, one hundred twenty-one".