211010111171 has 2 divisors, whose sum is σ = 211010111172. Its totient is φ = 211010111170.

The previous prime is 211010111153. The next prime is 211010111183. The reversal of 211010111171 is 171111010112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211010111171 is a prime.

It is not a weakly prime, because it can be changed into another prime (211010111671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505055585 + 105505055586.

It is an arithmetic number, because the mean of its divisors is an integer number (105505055586).

Almost surely, 2^211010111171 is an apocalyptic number.

211010111171 is a deficient number, since it is larger than the sum of its proper divisors (1).

211010111171 is an equidigital number, since it uses as much as digits as its factorization.

211010111171 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 211010111171 its reverse (171111010112), we get a palindrome (382121121283).

The spelling of 211010111171 in words is "two hundred eleven billion, ten million, one hundred eleven thousand, one hundred seventy-one".