12171233 has 2 divisors, whose sum is σ = 12171234. Its totient is φ = 12171232.

The previous prime is 12171227. The next prime is 12171239. The reversal of 12171233 is 33217121.

12171233 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12171227) and next prime (12171239).

It can be written as a sum of positive squares in only one way, i.e., 10163344 + 2007889 = 3188^2 + 1417^2 .

It is a cyclic number.

It is not a de Polignac number, because 12171233 - 2¹⁰ = 12170209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12171239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6085616 + 6085617.

It is an arithmetic number, because the mean of its divisors is an integer number (6085617).

Almost surely, 2^12171233 is an apocalyptic number.

It is an amenable number.

12171233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12171233 is an equidigital number, since it uses as much as digits as its factorization.

12171233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 20.

The square root of 12171233 is about 3488.7294248766. The cubic root of 12171233 is about 230.0266698752.

Adding to 12171233 its reverse (33217121), we get a palindrome (45388354).

The spelling of 12171233 in words is "twelve million, one hundred seventy-one thousand, two hundred thirty-three".