200121221100289 has 2 divisors, whose sum is σ = 200121221100290. Its totient is φ = 200121221100288.

The previous prime is 200121221100247. The next prime is 200121221100299. The reversal of 200121221100289 is 982001122121002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111604265461264 + 88516955639025 = 10564292^2 + 9408345^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121221100289 - 2²⁹ = 200120684229377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200121221100289.

It is not a weakly prime, because it can be changed into another prime (200121221100299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060610550144 + 100060610550145.

It is an arithmetic number, because the mean of its divisors is an integer number (100060610550145).

Almost surely, 2^{200121221100289} is an apocalyptic number.

It is an amenable number.

200121221100289 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121221100289 is an equidigital number, since it uses as much as digits as its factorization.

200121221100289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 200121221100289 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thousand, two hundred eighty-nine".