11321121323 has 4 divisors (see below), whose sum is σ = 11480573808. Its totient is φ = 11161668840.

The previous prime is 11321121299. The next prime is 11321121359. The reversal of 11321121323 is 32312112311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32312112311 = 67 ⋅482270333.

It is a cyclic number.

It is not a de Polignac number, because 11321121323 - 2²² = 11316927019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321121295 and 11321121304.

It is not an unprimeable number, because it can be changed into a prime (11321121373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79726136 + ... + 79726277.

It is an arithmetic number, because the mean of its divisors is an integer number (2870143452).

Almost surely, 2^11321121323 is an apocalyptic number.

11321121323 is a deficient number, since it is larger than the sum of its proper divisors (159452485).

11321121323 is an equidigital number, since it uses as much as digits as its factorization.

11321121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159452484.

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

Adding to 11321121323 its reverse (32312112311), we get a palindrome (43633233634).

The spelling of 11321121323 in words is "eleven billion, three hundred twenty-one million, one hundred twenty-one thousand, three hundred twenty-three".