21010010210089 has 2 divisors, whose sum is σ = 21010010210090. Its totient is φ = 21010010210088.

The previous prime is 21010010210023. The next prime is 21010010210113. The reversal of 21010010210089 is 98001201001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18140401314025 + 2869608896064 = 4259155^2 + 1693992^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010010210089 - 2¹¹ = 21010010208041 is a prime.

It is not a weakly prime, because it can be changed into another prime (21010010210389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505005105044 + 10505005105045.

It is an arithmetic number, because the mean of its divisors is an integer number (10505005105045).

Almost surely, 2^{21010010210089} is an apocalyptic number.

It is an amenable number.

21010010210089 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010010210089 is an equidigital number, since it uses as much as digits as its factorization.

21010010210089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 21010010210089 in words is "twenty-one trillion, ten billion, ten million, two hundred ten thousand, eighty-nine".