21300110171 has 2 divisors, whose sum is σ = 21300110172. Its totient is φ = 21300110170.

The previous prime is 21300110129. The next prime is 21300110207. The reversal of 21300110171 is 17101100312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21300110171 is a prime.

It is not a weakly prime, because it can be changed into another prime (21300110971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650055085 + 10650055086.

It is an arithmetic number, because the mean of its divisors is an integer number (10650055086).

Almost surely, 2^21300110171 is an apocalyptic number.

21300110171 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300110171 is an equidigital number, since it uses as much as digits as its factorization.

21300110171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 17.

Adding to 21300110171 its reverse (17101100312), we get a palindrome (38401210483).

The spelling of 21300110171 in words is "twenty-one billion, three hundred million, one hundred ten thousand, one hundred seventy-one".