120002200121 has 2 divisors, whose sum is σ = 120002200122. Its totient is φ = 120002200120.

The previous prime is 120002200117. The next prime is 120002200141. The reversal of 120002200121 is 121002200021.

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., 119758215721 + 243984400 = 346061^2 + 15620^2 .

It is an emirp because it is prime and its reverse (121002200021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120002200121 - 2² = 120002200117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120002200141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60001100060 + 60001100061.

It is an arithmetic number, because the mean of its divisors is an integer number (60001100061).

Almost surely, 2^120002200121 is an apocalyptic number.

It is an amenable number.

120002200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120002200121 is an equidigital number, since it uses as much as digits as its factorization.

120002200121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120002200121 its reverse (121002200021), we get a palindrome (241004400142).

The spelling of 120002200121 in words is "one hundred twenty billion, two million, two hundred thousand, one hundred twenty-one".