211330211171 has 2 divisors, whose sum is σ = 211330211172. Its totient is φ = 211330211170.

The previous prime is 211330211143. The next prime is 211330211179. The reversal of 211330211171 is 171112033112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211330211171 is a prime.

It is not a weakly prime, because it can be changed into another prime (211330211179) 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, 105665105585 + 105665105586.

It is an arithmetic number, because the mean of its divisors is an integer number (105665105586).

Almost surely, 2^211330211171 is an apocalyptic number.

211330211171 is a deficient number, since it is larger than the sum of its proper divisors (1).

211330211171 is an equidigital number, since it uses as much as digits as its factorization.

211330211171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 211330211171 its reverse (171112033112), we get a palindrome (382442244283).

The spelling of 211330211171 in words is "two hundred eleven billion, three hundred thirty million, two hundred eleven thousand, one hundred seventy-one".