12208171 has 2 divisors, whose sum is σ = 12208172. Its totient is φ = 12208170.

The previous prime is 12208169. The next prime is 12208177. The reversal of 12208171 is 17180221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12208171 - 2¹ = 12208169 is a prime.

Together with 12208169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12208177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104085 + 6104086.

It is an arithmetic number, because the mean of its divisors is an integer number (6104086).

Almost surely, 2^12208171 is an apocalyptic number.

12208171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12208171 is an equidigital number, since it uses as much as digits as its factorization.

12208171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12208171 is about 3494.0193187789. The cubic root of 12208171 is about 230.2591345218.

Adding to 12208171 its reverse (17180221), we get a palindrome (29388392).

The spelling of 12208171 in words is "twelve million, two hundred eight thousand, one hundred seventy-one".