200220202200121 has 2 divisors, whose sum is σ = 200220202200122. Its totient is φ = 200220202200120.

The previous prime is 200220202200113. The next prime is 200220202200163. The reversal of 200220202200121 is 121002202022002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189819506250000 + 10400695950121 = 13777500^2 + 3225011^2 .

It is a cyclic number.

It is not a de Polignac number, because 200220202200121 - 2³ = 200220202200113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200220202200095 and 200220202200104.

It is not a weakly prime, because it can be changed into another prime (200220202300121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110101100060 + 100110101100061.

It is an arithmetic number, because the mean of its divisors is an integer number (100110101100061).

Almost surely, 2^{200220202200121} is an apocalyptic number.

It is an amenable number.

200220202200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200220202200121 is an equidigital number, since it uses as much as digits as its factorization.

200220202200121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 200220202200121 its reverse (121002202022002), we get a palindrome (321222404222123).

The spelling of 200220202200121 in words is "two hundred trillion, two hundred twenty billion, two hundred two million, two hundred thousand, one hundred twenty-one".