201111101171 has 2 divisors, whose sum is σ = 201111101172. Its totient is φ = 201111101170.

The previous prime is 201111101083. The next prime is 201111101173. The reversal of 201111101171 is 171101111102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201111101171 is a prime.

Together with 201111101173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201111101173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555550585 + 100555550586.

It is an arithmetic number, because the mean of its divisors is an integer number (100555550586).

Almost surely, 2^201111101171 is an apocalyptic number.

201111101171 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111101171 is an equidigital number, since it uses as much as digits as its factorization.

201111101171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 17.

Adding to 201111101171 its reverse (171101111102), we get a palindrome (372212212273).

The spelling of 201111101171 in words is "two hundred one billion, one hundred eleven million, one hundred one thousand, one hundred seventy-one".