21101122210163 has 2 divisors, whose sum is σ = 21101122210164. Its totient is φ = 21101122210162.

The previous prime is 21101122210141. The next prime is 21101122210297. The reversal of 21101122210163 is 36101222110112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21101122210163 - 2²⁰ = 21101121161587 is a prime.

It is not a weakly prime, because it can be changed into another prime (21101122200163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550561105081 + 10550561105082.

It is an arithmetic number, because the mean of its divisors is an integer number (10550561105082).

Almost surely, 2^{21101122210163} is an apocalyptic number.

21101122210163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101122210163 is an equidigital number, since it uses as much as digits as its factorization.

21101122210163 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 23.

Adding to 21101122210163 its reverse (36101222110112), we get a palindrome (57202344320275).

The spelling of 21101122210163 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two million, two hundred ten thousand, one hundred sixty-three".