21104003124329 has 2 divisors, whose sum is σ = 21104003124330. Its totient is φ = 21104003124328.

The previous prime is 21104003124301. The next prime is 21104003124349. The reversal of 21104003124329 is 92342130040112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12767415215104 + 8336587909225 = 3573152^2 + 2887315^2 .

It is a cyclic number.

It is not a de Polignac number, because 21104003124329 - 2²⁴ = 21103986347113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21104003124295 and 21104003124304.

It is not a weakly prime, because it can be changed into another prime (21104003124349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10552001562164 + 10552001562165.

It is an arithmetic number, because the mean of its divisors is an integer number (10552001562165).

Almost surely, 2^{21104003124329} is an apocalyptic number.

It is an amenable number.

21104003124329 is a deficient number, since it is larger than the sum of its proper divisors (1).

21104003124329 is an equidigital number, since it uses as much as digits as its factorization.

21104003124329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 21104003124329 in words is "twenty-one trillion, one hundred four billion, three million, one hundred twenty-four thousand, three hundred twenty-nine".