11123332321 has 4 divisors (see below), whose sum is σ = 11382014512. Its totient is φ = 10864650132.

The previous prime is 11123332309. The next prime is 11123332327. The reversal of 11123332321 is 12323332111.

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: 12323332111 = 25229 ⋅488459.

It is a cyclic number.

It is not a de Polignac number, because 11123332321 - 2⁹ = 11123331809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11123332292 and 11123332301.

It is not an unprimeable number, because it can be changed into a prime (11123332327) 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, 129341031 + ... + 129341116.

It is an arithmetic number, because the mean of its divisors is an integer number (2845503628).

Almost surely, 2^11123332321 is an apocalyptic number.

It is an amenable number.

11123332321 is a deficient number, since it is larger than the sum of its proper divisors (258682191).

11123332321 is an equidigital number, since it uses as much as digits as its factorization.

11123332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258682190.

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

Adding to 11123332321 its reverse (12323332111), we get a palindrome (23446664432).

The spelling of 11123332321 in words is "eleven billion, one hundred twenty-three million, three hundred thirty-two thousand, three hundred twenty-one".