200200200010121 has 2 divisors, whose sum is σ = 200200200010122. Its totient is φ = 200200200010120.

The previous prime is 200200200010099. The next prime is 200200200010123. The reversal of 200200200010121 is 121010002002002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150214168803721 + 49986031206400 = 12256189^2 + 7070080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200200200010121 is a prime.

Together with 200200200010123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200200200010123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100100100005060 + 100100100005061.

It is an arithmetic number, because the mean of its divisors is an integer number (100100100005061).

Almost surely, 2^{200200200010121} is an apocalyptic number.

It is an amenable number.

200200200010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200200200010121 is an equidigital number, since it uses as much as digits as its factorization.

200200200010121 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 200200200010121 its reverse (121010002002002), we get a palindrome (321210202012123).

The spelling of 200200200010121 in words is "two hundred trillion, two hundred billion, two hundred million, ten thousand, one hundred twenty-one".