21101122210297 has 2 divisors, whose sum is σ = 21101122210298. Its totient is φ = 21101122210296.

The previous prime is 21101122210163. The next prime is 21101122210387. The reversal of 21101122210297 is 79201222110112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16482495698496 + 4618626511801 = 4059864^2 + 2149099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21101122210297 is a prime.

It is not a weakly prime, because it can be changed into another prime (21101122210097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550561105148 + 10550561105149.

It is an arithmetic number, because the mean of its divisors is an integer number (10550561105149).

Almost surely, 2^{21101122210297} is an apocalyptic number.

It is an amenable number.

21101122210297 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101122210297 is an equidigital number, since it uses as much as digits as its factorization.

21101122210297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 21101122210297 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two million, two hundred ten thousand, two hundred ninety-seven".