200002200121 has 2 divisors, whose sum is σ = 200002200122. Its totient is φ = 200002200120.

The previous prime is 200002200119. The next prime is 200002200127. The reversal of 200002200121 is 121002200002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176409240121 + 23592960000 = 420011^2 + 153600^2 .

It is a cyclic number.

It is not a de Polignac number, because 200002200121 - 2¹ = 200002200119 is a prime.

Together with 200002200119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 200002200098 and 200002200107.

It is not a weakly prime, because it can be changed into another prime (200002200127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100001100060 + 100001100061.

It is an arithmetic number, because the mean of its divisors is an integer number (100001100061).

Almost surely, 2^200002200121 is an apocalyptic number.

It is an amenable number.

200002200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200002200121 is an equidigital number, since it uses as much as digits as its factorization.

200002200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 200002200121 its reverse (121002200002), we get a palindrome (321004400123).

The spelling of 200002200121 in words is "two hundred billion, two million, two hundred thousand, one hundred twenty-one".