21103302179 has 2 divisors, whose sum is σ = 21103302180. Its totient is φ = 21103302178.

The previous prime is 21103302149. The next prime is 21103302221. The reversal of 21103302179 is 97120330112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21103302179 is a prime.

It is a super-2 number, since 2×21103302179² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21103302139) 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, 10551651089 + 10551651090.

It is an arithmetic number, because the mean of its divisors is an integer number (10551651090).

Almost surely, 2^21103302179 is an apocalyptic number.

21103302179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103302179 is an equidigital number, since it uses as much as digits as its factorization.

21103302179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The spelling of 21103302179 in words is "twenty-one billion, one hundred three million, three hundred two thousand, one hundred seventy-nine".