12123443323 has 4 divisors (see below), whose sum is σ = 12196038960. Its totient is φ = 12050847688.

The previous prime is 12123443303. The next prime is 12123443329. The reversal of 12123443323 is 32334432121.

It is a happy number.

12123443323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32334432121 = 113 ⋅286145417.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12123443323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12123443291 and 12123443300.

It is not an unprimeable number, because it can be changed into a prime (12123443329) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 36297568 + ... + 36297901.

It is an arithmetic number, because the mean of its divisors is an integer number (3049009740).

Almost surely, 2^12123443323 is an apocalyptic number.

12123443323 is a deficient number, since it is larger than the sum of its proper divisors (72595637).

12123443323 is an equidigital number, since it uses as much as digits as its factorization.

12123443323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72595636.

The product of its digits is 10368, while the sum is 28.

Adding to 12123443323 its reverse (32334432121), we get a palindrome (44457875444).

The spelling of 12123443323 in words is "twelve billion, one hundred twenty-three million, four hundred forty-three thousand, three hundred twenty-three".