21301113179 has 2 divisors, whose sum is σ = 21301113180. Its totient is φ = 21301113178.

The previous prime is 21301113121. The next prime is 21301113233. The reversal of 21301113179 is 97131110312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21301113179 is a prime.

It is not a weakly prime, because it can be changed into another prime (21301113109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650556589 + 10650556590.

It is an arithmetic number, because the mean of its divisors is an integer number (10650556590).

Almost surely, 2^21301113179 is an apocalyptic number.

21301113179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301113179 is an equidigital number, since it uses as much as digits as its factorization.

21301113179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 29.

The spelling of 21301113179 in words is "twenty-one billion, three hundred one million, one hundred thirteen thousand, one hundred seventy-nine".