11321221323223 has 8 divisors (see below), whose sum is σ = 13202590464800. Its totient is φ = 9703903991040.

The previous prime is 11321221323199. The next prime is 11321221323229. The reversal of 11321221323223 is 32232312212311.

It is not a de Polignac number, because 11321221323223 - 2³⁷ = 11183782369751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321221323191 and 11321221323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321221323229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16503237738 + ... + 16503238423.

It is an arithmetic number, because the mean of its divisors is an integer number (1650323808100).

Almost surely, 2^{11321221323223} is an apocalyptic number.

11321221323223 is a deficient number, since it is larger than the sum of its proper divisors (1881369141577).

11321221323223 is an frugal number, since it uses more digits than its factorization.

11321221323223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33006476182 (or 33006476168 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

Adding to 11321221323223 its reverse (32232312212311), we get a palindrome (43553533535534).

The spelling of 11321221323223 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty-three".