21000211832399 has 2 divisors, whose sum is σ = 21000211832400. Its totient is φ = 21000211832398.

The previous prime is 21000211832389. The next prime is 21000211832447. The reversal of 21000211832399 is 99323811200012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21000211832399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21000211832389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500105916199 + 10500105916200.

It is an arithmetic number, because the mean of its divisors is an integer number (10500105916200).

Almost surely, 2^{21000211832399} is an apocalyptic number.

21000211832399 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000211832399 is an equidigital number, since it uses as much as digits as its factorization.

21000211832399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 21000211832399 in words is "twenty-one trillion, two hundred eleven million, eight hundred thirty-two thousand, three hundred ninety-nine".