21202101002179 has 2 divisors, whose sum is σ = 21202101002180. Its totient is φ = 21202101002178.

The previous prime is 21202101002123. The next prime is 21202101002189. The reversal of 21202101002179 is 97120010120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202101002179 - 2²³ = 21202092613571 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202101002189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601050501089 + 10601050501090.

It is an arithmetic number, because the mean of its divisors is an integer number (10601050501090).

Almost surely, 2^{21202101002179} is an apocalyptic number.

21202101002179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202101002179 is an equidigital number, since it uses as much as digits as its factorization.

21202101002179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 21202101002179 in words is "twenty-one trillion, two hundred two billion, one hundred one million, two thousand, one hundred seventy-nine".