12123220313 has 16 divisors (see below), whose sum is σ = 13196697600. Its totient is φ = 11094621840.

The previous prime is 12123220297. The next prime is 12123220321. The reversal of 12123220313 is 31302232121.

12123220313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12123220313 - 2⁴ = 12123220297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12123220513) 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 15 ways as a sum of consecutive naturals, for example, 313328 + ... + 349886.

It is an arithmetic number, because the mean of its divisors is an integer number (824793600).

Almost surely, 2^12123220313 is an apocalyptic number.

It is an amenable number.

12123220313 is a deficient number, since it is larger than the sum of its proper divisors (1073477287).

12123220313 is a wasteful number, since it uses less digits than its factorization.

12123220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37172.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12123220313 its reverse (31302232121), we get a palindrome (43425452434).

The spelling of 12123220313 in words is "twelve billion, one hundred twenty-three million, two hundred twenty thousand, three hundred thirteen".