21100233200089 has 2 divisors, whose sum is σ = 21100233200090. Its totient is φ = 21100233200088.

The previous prime is 21100233200087. The next prime is 21100233200129. The reversal of 21100233200089 is 98000233200112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17749301592064 + 3350931608025 = 4212992^2 + 1830555^2 .

It is a cyclic number.

It is not a de Polignac number, because 21100233200089 - 2¹ = 21100233200087 is a prime.

Together with 21100233200087, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21100233200089.

It is not a weakly prime, because it can be changed into another prime (21100233200087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550116600044 + 10550116600045.

It is an arithmetic number, because the mean of its divisors is an integer number (10550116600045).

Almost surely, 2^{21100233200089} is an apocalyptic number.

It is an amenable number.

21100233200089 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100233200089 is an equidigital number, since it uses as much as digits as its factorization.

21100233200089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 21100233200089 in words is "twenty-one trillion, one hundred billion, two hundred thirty-three million, two hundred thousand, eighty-nine".