12144217 has 2 divisors, whose sum is σ = 12144218. Its totient is φ = 12144216.

The previous prime is 12144199. The next prime is 12144227. The reversal of 12144217 is 71244121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8128201 + 4016016 = 2851^2 + 2004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12144217 is a prime.

It is not a weakly prime, because it can be changed into another prime (12144227) 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, 6072108 + 6072109.

It is an arithmetic number, because the mean of its divisors is an integer number (6072109).

Almost surely, 2^12144217 is an apocalyptic number.

It is an amenable number.

12144217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12144217 is an equidigital number, since it uses as much as digits as its factorization.

12144217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 22.

The square root of 12144217 is about 3484.8553772000. The cubic root of 12144217 is about 229.8563501236.

Adding to 12144217 its reverse (71244121), we get a palindrome (83388338).

The spelling of 12144217 in words is "twelve million, one hundred forty-four thousand, two hundred seventeen".