12123320224 has 12 divisors (see below), whose sum is σ = 23867786754. Its totient is φ = 6061660096.

The previous prime is 12123320213. The next prime is 12123320243. The reversal of 12123320224 is 42202332121.

12123320224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6453230224 + 5670090000 = 80332^2 + 75300^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12123320195 and 12123320204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189426847 + ... + 189426910.

Almost surely, 2^12123320224 is an apocalyptic number.

It is an amenable number.

12123320224 is a deficient number, since it is larger than the sum of its proper divisors (11744466530).

12123320224 is an equidigital number, since it uses as much as digits as its factorization.

12123320224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378853767 (or 378853759 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12123320224 its reverse (42202332121), we get a palindrome (54325652345).

The spelling of 12123320224 in words is "twelve billion, one hundred twenty-three million, three hundred twenty thousand, two hundred twenty-four".