21001300130099 has 2 divisors, whose sum is σ = 21001300130100. Its totient is φ = 21001300130098.

The previous prime is 21001300130071. The next prime is 21001300130159. The reversal of 21001300130099 is 99003100310012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21001300130099 is a prime.

It is not a weakly prime, because it can be changed into another prime (21001300136099) 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, 10500650065049 + 10500650065050.

It is an arithmetic number, because the mean of its divisors is an integer number (10500650065050).

Almost surely, 2^{21001300130099} is an apocalyptic number.

21001300130099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21001300130099 is an equidigital number, since it uses as much as digits as its factorization.

21001300130099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The spelling of 21001300130099 in words is "twenty-one trillion, one billion, three hundred million, one hundred thirty thousand, ninety-nine".