12321123013 has 4 divisors (see below), whose sum is σ = 12323018988. Its totient is φ = 12319227040.

The previous prime is 12321122993. The next prime is 12321123037. The reversal of 12321123013 is 31032112321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11466554724 + 854568289 = 107082^2 + 29233^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321123013 - 2⁵ = 12321122981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321121013) 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, 938206 + ... + 951247.

It is an arithmetic number, because the mean of its divisors is an integer number (3080754747).

Almost surely, 2^12321123013 is an apocalyptic number.

It is an amenable number.

12321123013 is a deficient number, since it is larger than the sum of its proper divisors (1895975).

12321123013 is an equidigital number, since it uses as much as digits as its factorization.

12321123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895974.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12321123013 its reverse (31032112321), we get a palindrome (43353235334).

The spelling of 12321123013 in words is "twelve billion, three hundred twenty-one million, one hundred twenty-three thousand, thirteen".