122020002121 has 2 divisors, whose sum is σ = 122020002122. Its totient is φ = 122020002120.

The previous prime is 122020002119. The next prime is 122020002127. The reversal of 122020002121 is 121200020221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120089278521 + 1930723600 = 346539^2 + 43940^2 .

It is a cyclic number.

It is not a de Polignac number, because 122020002121 - 2¹ = 122020002119 is a prime.

Together with 122020002119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (122020002127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010001060 + 61010001061.

It is an arithmetic number, because the mean of its divisors is an integer number (61010001061).

Almost surely, 2^122020002121 is an apocalyptic number.

It is an amenable number.

122020002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

122020002121 is an equidigital number, since it uses as much as digits as its factorization.

122020002121 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 13.

Adding to 122020002121 its reverse (121200020221), we get a palindrome (243220022342).

The spelling of 122020002121 in words is "one hundred twenty-two billion, twenty million, two thousand, one hundred twenty-one".