21101002010089 has 2 divisors, whose sum is σ = 21101002010090. Its totient is φ = 21101002010088.

The previous prime is 21101002010087. The next prime is 21101002010113. The reversal of 21101002010089 is 98001020010112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10698570931689 + 10402431078400 = 3270867^2 + 3225280^2 .

It is a cyclic number.

It is not a de Polignac number, because 21101002010089 - 2¹ = 21101002010087 is a prime.

Together with 21101002010087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21101002010087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550501005044 + 10550501005045.

It is an arithmetic number, because the mean of its divisors is an integer number (10550501005045).

Almost surely, 2^{21101002010089} is an apocalyptic number.

It is an amenable number.

21101002010089 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101002010089 is an equidigital number, since it uses as much as digits as its factorization.

21101002010089 is an evil number, because the sum of its binary digits is even.

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

The spelling of 21101002010089 in words is "twenty-one trillion, one hundred one billion, two million, ten thousand, eighty-nine".