12113123321 has 8 divisors (see below), whose sum is σ = 13112494920. Its totient is φ = 11123407872.

The previous prime is 12113123291. The next prime is 12113123327. The reversal of 12113123321 is 12332131121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 354757225 + 11758366096 = 18835^2 + 108436^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12113123321 - 2¹⁰ = 12113122297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12113123293 and 12113123302.

It is not an unprimeable number, because it can be changed into a prime (12113123327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411426 + ... + 2416443.

It is an arithmetic number, because the mean of its divisors is an integer number (1639061865).

Almost surely, 2^12113123321 is an apocalyptic number.

It is an amenable number.

12113123321 is a deficient number, since it is larger than the sum of its proper divisors (999371599).

12113123321 is a wasteful number, since it uses less digits than its factorization.

12113123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828075.

The product of its digits is 216, while the sum is 20.

Adding to 12113123321 its reverse (12332131121), we get a palindrome (24445254442).

The spelling of 12113123321 in words is "twelve billion, one hundred thirteen million, one hundred twenty-three thousand, three hundred twenty-one".