12144213 has 6 divisors (see below), whose sum is σ = 17541654. Its totient is φ = 8096136.

The previous prime is 12144199. The next prime is 12144217. The reversal of 12144213 is 31244121.

It can be written as a sum of positive squares in only one way, i.e., 9381969 + 2762244 = 3063^2 + 1662^2 .

It is not a de Polignac number, because 12144213 - 2¹⁰ = 12143189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144217) 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 in 5 ways as a sum of consecutive naturals, for example, 674670 + ... + 674687.

It is an arithmetic number, because the mean of its divisors is an integer number (2923609).

Almost surely, 2^12144213 is an apocalyptic number.

It is an amenable number.

12144213 is a deficient number, since it is larger than the sum of its proper divisors (5397441).

12144213 is a wasteful number, since it uses less digits than its factorization.

12144213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349363 (or 1349360 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 12144213 is about 3484.8548032881. The cubic root of 12144213 is about 229.8563248873.

Adding to 12144213 its reverse (31244121), we get a palindrome (43388334).

The spelling of 12144213 in words is "twelve million, one hundred forty-four thousand, two hundred thirteen".