12224661 has 12 divisors (see below), whose sum is σ = 17041248. Its totient is φ = 7794424.

The previous prime is 12224651. The next prime is 12224669. The reversal of 12224661 is 16642221.

It is not a de Polignac number, because 12224661 - 2⁵ = 12224629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224669) 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 in 11 ways as a sum of consecutive naturals, for example, 2265 + ... + 5438.

It is an arithmetic number, because the mean of its divisors is an integer number (1420104).

Almost surely, 2^12224661 is an apocalyptic number.

It is an amenable number.

12224661 is a deficient number, since it is larger than the sum of its proper divisors (4816587).

12224661 is an equidigital number, since it uses as much as digits as its factorization.

12224661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752 (or 7729 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 12224661 is about 3496.3782690092. The cubic root of 12224661 is about 230.3627608784.

Adding to 12224661 its reverse (16642221), we get a palindrome (28866882).

The spelling of 12224661 in words is "twelve million, two hundred twenty-four thousand, six hundred sixty-one".