21301312100039 has 2 divisors, whose sum is σ = 21301312100040. Its totient is φ = 21301312100038.

The previous prime is 21301312099973. The next prime is 21301312100071. The reversal of 21301312100039 is 93000121310312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21301312100039 - 2¹⁶ = 21301312034503 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 21301312099990 and 21301312100017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21301312100639) 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, 10650656050019 + 10650656050020.

It is an arithmetic number, because the mean of its divisors is an integer number (10650656050020).

Almost surely, 2^{21301312100039} is an apocalyptic number.

21301312100039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301312100039 is an equidigital number, since it uses as much as digits as its factorization.

21301312100039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 21301312100039 in words is "twenty-one trillion, three hundred one billion, three hundred twelve million, one hundred thousand, thirty-nine".