12323133121 has 4 divisors (see below), whose sum is σ = 13271066452. Its totient is φ = 11375199792.

The previous prime is 12323133091. The next prime is 12323133157. The reversal of 12323133121 is 12133132321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12133132321 = 35993 ⋅337097.

It can be written as a sum of positive squares in 2 ways, for example, as 933974721 + 11389158400 = 30561^2 + 106720^2 .

It is a cyclic number.

It is not a de Polignac number, because 12323133121 - 2⁹ = 12323132609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12323133092 and 12323133101.

It is not an unprimeable number, because it can be changed into a prime (12323433121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473966646 + ... + 473966671.

It is an arithmetic number, because the mean of its divisors is an integer number (3317766613).

Almost surely, 2^12323133121 is an apocalyptic number.

It is an amenable number.

12323133121 is a deficient number, since it is larger than the sum of its proper divisors (947933331).

12323133121 is an equidigital number, since it uses as much as digits as its factorization.

12323133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947933330.

The product of its digits is 648, while the sum is 22.

Adding to 12323133121 its reverse (12133132321), we get a palindrome (24456265442).

The spelling of 12323133121 in words is "twelve billion, three hundred twenty-three million, one hundred thirty-three thousand, one hundred twenty-one".