12011171 has 2 divisors, whose sum is σ = 12011172. Its totient is φ = 12011170.

The previous prime is 12011149. The next prime is 12011177. The reversal of 12011171 is 17111021.

12011171 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (17111021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011171 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005585 + 6005586.

It is an arithmetic number, because the mean of its divisors is an integer number (6005586).

Almost surely, 2^12011171 is an apocalyptic number.

12011171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011171 is an equidigital number, since it uses as much as digits as its factorization.

12011171 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 14.

The square root of 12011171 is about 3465.7136350253. The cubic root of 12011171 is about 229.0138687151.

Adding to 12011171 its reverse (17111021), we get a palindrome (29122192).

The spelling of 12011171 in words is "twelve million, eleven thousand, one hundred seventy-one".