21104133599 has 2 divisors, whose sum is σ = 21104133600. Its totient is φ = 21104133598.

The previous prime is 21104133577. The next prime is 21104133613. The reversal of 21104133599 is 99533140112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21104133599 - 2⁸ = 21104133343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21104133509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10552066799 + 10552066800.

It is an arithmetic number, because the mean of its divisors is an integer number (10552066800).

Almost surely, 2^21104133599 is an apocalyptic number.

21104133599 is a deficient number, since it is larger than the sum of its proper divisors (1).

21104133599 is an equidigital number, since it uses as much as digits as its factorization.

21104133599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 21104133599 in words is "twenty-one billion, one hundred four million, one hundred thirty-three thousand, five hundred ninety-nine".