21010122110099 has 2 divisors, whose sum is σ = 21010122110100. Its totient is φ = 21010122110098.

The previous prime is 21010122109993. The next prime is 21010122110179. The reversal of 21010122110099 is 99001122101012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010122110099 - 2⁸ = 21010122109843 is a prime.

It is not a weakly prime, because it can be changed into another prime (21010122130099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505061055049 + 10505061055050.

It is an arithmetic number, because the mean of its divisors is an integer number (10505061055050).

Almost surely, 2^{21010122110099} is an apocalyptic number.

21010122110099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010122110099 is an equidigital number, since it uses as much as digits as its factorization.

21010122110099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 21010122110099 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, one hundred ten thousand, ninety-nine".