12323211123 has 4 divisors (see below), whose sum is σ = 16430948168. Its totient is φ = 8215474080.

The previous prime is 12323211067. The next prime is 12323211127. The reversal of 12323211123 is 32111232321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12323211123 - 2¹⁰ = 12323210099 is a prime.

It is a super-2 number, since 2×12323211123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12323211123.

It is not an unprimeable number, because it can be changed into a prime (12323211127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053868518 + ... + 2053868523.

It is an arithmetic number, because the mean of its divisors is an integer number (4107737042).

Almost surely, 2^12323211123 is an apocalyptic number.

12323211123 is a deficient number, since it is larger than the sum of its proper divisors (4107737045).

12323211123 is an equidigital number, since it uses as much as digits as its factorization.

12323211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107737044.

The product of its digits is 432, while the sum is 21.

Adding to 12323211123 its reverse (32111232321), we get a palindrome (44434443444).

It can be divided in two parts, 12323 and 211123, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 12323211123 in words is "twelve billion, three hundred twenty-three million, two hundred eleven thousand, one hundred twenty-three".