20302321103171 has 2 divisors, whose sum is σ = 20302321103172. Its totient is φ = 20302321103170.

The previous prime is 20302321103093. The next prime is 20302321103173. The reversal of 20302321103171 is 17130112320302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20302321103171 is a prime.

Together with 20302321103173, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20302321103171.

It is not a weakly prime, because it can be changed into another prime (20302321103173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151160551585 + 10151160551586.

It is an arithmetic number, because the mean of its divisors is an integer number (10151160551586).

Almost surely, 2^{20302321103171} is an apocalyptic number.

20302321103171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302321103171 is an equidigital number, since it uses as much as digits as its factorization.

20302321103171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 20302321103171 its reverse (17130112320302), we get a palindrome (37432433423473).

The spelling of 20302321103171 in words is "twenty trillion, three hundred two billion, three hundred twenty-one million, one hundred three thousand, one hundred seventy-one".