211112121211171 has 2 divisors, whose sum is σ = 211112121211172. Its totient is φ = 211112121211170.

The previous prime is 211112121211099. The next prime is 211112121211259. The reversal of 211112121211171 is 171112121211112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211112121211171 - 2¹¹ = 211112121209123 is a prime.

It is not a weakly prime, because it can be changed into another prime (211112121218171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105556060605585 + 105556060605586.

It is an arithmetic number, because the mean of its divisors is an integer number (105556060605586).

Almost surely, 2^{211112121211171} is an apocalyptic number.

211112121211171 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112121211171 is an equidigital number, since it uses as much as digits as its factorization.

211112121211171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112, while the sum is 25.

Adding to 211112121211171 its reverse (171112121211112), we get a palindrome (382224242422283).

The spelling of 211112121211171 in words is "two hundred eleven trillion, one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, one hundred seventy-one".