200002121057 has 2 divisors, whose sum is σ = 200002121058. Its totient is φ = 200002121056.

The previous prime is 200002121051. The next prime is 200002121071. The reversal of 200002121057 is 750121200002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100702136896 + 99299984161 = 317336^2 + 315119^2 .

It is a cyclic number.

It is not a de Polignac number, because 200002121057 - 2⁴ = 200002121041 is a prime.

It is not a weakly prime, because it can be changed into another prime (200002121051) 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, 100001060528 + 100001060529.

It is an arithmetic number, because the mean of its divisors is an integer number (100001060529).

Almost surely, 2^200002121057 is an apocalyptic number.

It is an amenable number.

200002121057 is a deficient number, since it is larger than the sum of its proper divisors (1).

200002121057 is an equidigital number, since it uses as much as digits as its factorization.

200002121057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

Adding to 200002121057 its reverse (750121200002), we get a palindrome (950123321059).

The spelling of 200002121057 in words is "two hundred billion, two million, one hundred twenty-one thousand, fifty-seven".