21023003120179 has 2 divisors, whose sum is σ = 21023003120180. Its totient is φ = 21023003120178.

The previous prime is 21023003120167. The next prime is 21023003120209. The reversal of 21023003120179 is 97102130032012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21023003120179 - 2²¹ = 21023001023027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21023003120179.

It is not a weakly prime, because it can be changed into another prime (21023003120149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511501560089 + 10511501560090.

It is an arithmetic number, because the mean of its divisors is an integer number (10511501560090).

Almost surely, 2^{21023003120179} is an apocalyptic number.

21023003120179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023003120179 is an equidigital number, since it uses as much as digits as its factorization.

21023003120179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 21023003120179 in words is "twenty-one trillion, twenty-three billion, three million, one hundred twenty thousand, one hundred seventy-nine".