12113321 has 4 divisors (see below), whose sum is σ = 13214544. Its totient is φ = 11012100.

The previous prime is 12113303. The next prime is 12113323. The reversal of 12113321 is 12331121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12331121 = 11 ⋅1121011.

It is not a de Polignac number, because 12113321 - 2¹⁰ = 12112297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12113296 and 12113305.

It is not an unprimeable number, because it can be changed into a prime (12113323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550595 + ... + 550616.

It is an arithmetic number, because the mean of its divisors is an integer number (3303636).

Almost surely, 2^12113321 is an apocalyptic number.

12113321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12113321 is a deficient number, since it is larger than the sum of its proper divisors (1101223).

12113321 is a wasteful number, since it uses less digits than its factorization.

12113321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101222.

The product of its digits is 36, while the sum is 14.

The square root of 12113321 is about 3480.4196586044. The cubic root of 12113321 is about 229.6612593868.

Adding to 12113321 its reverse (12331121), we get a palindrome (24444442).

The spelling of 12113321 in words is "twelve million, one hundred thirteen thousand, three hundred twenty-one".