11323320221231 has 4 divisors (see below), whose sum is σ = 11324422472352. Its totient is φ = 11322217970112.

The previous prime is 11323320221153. The next prime is 11323320221251. The reversal of 11323320221231 is 13212202332311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11323320221231 - 2³⁰ = 11322246479407 is a prime.

It is a super-2 number, since 2×11323320221231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11323320221231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323320221251) 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, 551110151 + ... + 551130696.

It is an arithmetic number, because the mean of its divisors is an integer number (2831105618088).

Almost surely, 2^{11323320221231} is an apocalyptic number.

11323320221231 is a deficient number, since it is larger than the sum of its proper divisors (1102251121).

11323320221231 is a wasteful number, since it uses less digits than its factorization.

11323320221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102251120.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 11323320221231 its reverse (13212202332311), we get a palindrome (24535522553542).

The spelling of 11323320221231 in words is "eleven trillion, three hundred twenty-three billion, three hundred twenty million, two hundred twenty-one thousand, two hundred thirty-one".