21004103031199 has 2 divisors, whose sum is σ = 21004103031200. Its totient is φ = 21004103031198.

The previous prime is 21004103031187. The next prime is 21004103031209. The reversal of 21004103031199 is 99113030140012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21004103031199 - 2⁵ = 21004103031167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21004103031139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10502051515599 + 10502051515600.

It is an arithmetic number, because the mean of its divisors is an integer number (10502051515600).

Almost surely, 2^{21004103031199} is an apocalyptic number.

21004103031199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21004103031199 is an equidigital number, since it uses as much as digits as its factorization.

21004103031199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 21004103031199 in words is "twenty-one trillion, four billion, one hundred three million, thirty-one thousand, one hundred ninety-nine".