211211171 has 2 divisors, whose sum is σ = 211211172. Its totient is φ = 211211170.

The previous prime is 211211159. The next prime is 211211177. The reversal of 211211171 is 171112112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211211171 - 2²⁶ = 144102307 is a prime.

It is a super-2 number, since 2×211211171² = 89220317510382482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211211177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605585 + 105605586.

It is an arithmetic number, because the mean of its divisors is an integer number (105605586).

Almost surely, 2^211211171 is an apocalyptic number.

211211171 is a deficient number, since it is larger than the sum of its proper divisors (1).

211211171 is an equidigital number, since it uses as much as digits as its factorization.

211211171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28, while the sum is 17.

The square root of 211211171 is about 14533.1060341553. The cubic root of 211211171 is about 595.5327206472.

Adding to 211211171 its reverse (171112112), we get a palindrome (382323283).

The spelling of 211211171 in words is "two hundred eleven million, two hundred eleven thousand, one hundred seventy-one".