201000202100989 has 2 divisors, whose sum is σ = 201000202100990. Its totient is φ = 201000202100988.

The previous prime is 201000202100899. The next prime is 201000202101007. The reversal of 201000202100989 is 989001202000102.

Together with previous prime (201000202100899) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123527286604089 + 77472915496900 = 11114283^2 + 8801870^2 .

It is a cyclic number.

It is not a de Polignac number, because 201000202100989 - 2⁷ = 201000202100861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201000202130989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500101050494 + 100500101050495.

It is an arithmetic number, because the mean of its divisors is an integer number (100500101050495).

Almost surely, 2^{201000202100989} is an apocalyptic number.

It is an amenable number.

201000202100989 is a deficient number, since it is larger than the sum of its proper divisors (1).

201000202100989 is an equidigital number, since it uses as much as digits as its factorization.

201000202100989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 201000202100989 in words is "two hundred one trillion, two hundred two million, one hundred thousand, nine hundred eighty-nine".