200121221101289 has 2 divisors, whose sum is σ = 200121221101290. Its totient is φ = 200121221101288.

The previous prime is 200121221101247. The next prime is 200121221101301. The reversal of 200121221101289 is 982101122121002.

200121221101289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170312809656025 + 29808411445264 = 13050395^2 + 5459708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121221101289 is a prime.

It is not a weakly prime, because it can be changed into another prime (200121221100289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060610550644 + 100060610550645.

It is an arithmetic number, because the mean of its divisors is an integer number (100060610550645).

Almost surely, 2^{200121221101289} is an apocalyptic number.

It is an amenable number.

200121221101289 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121221101289 is an equidigital number, since it uses as much as digits as its factorization.

200121221101289 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 32.

The spelling of 200121221101289 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, two hundred eighty-nine".