200164121 has 2 divisors, whose sum is σ = 200164122. Its totient is φ = 200164120.

The previous prime is 200164087. The next prime is 200164141. The reversal of 200164121 is 121461002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173949721 + 26214400 = 13189^2 + 5120^2 .

It is a cyclic number.

It is not a de Polignac number, because 200164121 - 2⁶ = 200164057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200164121.

It is not a weakly prime, because it can be changed into another prime (200164141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100082060 + 100082061.

It is an arithmetic number, because the mean of its divisors is an integer number (100082061).

Almost surely, 2^200164121 is an apocalyptic number.

It is an amenable number.

200164121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200164121 is an equidigital number, since it uses as much as digits as its factorization.

200164121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 200164121 is about 14147.9369874198. The cubic root of 200164121 is about 584.9634681451.

The spelling of 200164121 in words is "two hundred million, one hundred sixty-four thousand, one hundred twenty-one".