11231112223 has 4 divisors (see below), whose sum is σ = 11298364560. Its totient is φ = 11163859888.

The previous prime is 11231112157. The next prime is 11231112241. The reversal of 11231112223 is 32221113211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11231112223 is a prime.

It is a super-2 number, since 2×11231112223² (a number of 21 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 11231112223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231112023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33625918 + ... + 33626251.

It is an arithmetic number, because the mean of its divisors is an integer number (2824591140).

Almost surely, 2^11231112223 is an apocalyptic number.

11231112223 is a deficient number, since it is larger than the sum of its proper divisors (67252337).

11231112223 is an equidigital number, since it uses as much as digits as its factorization.

11231112223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67252336.

The product of its digits is 144, while the sum is 19.

Adding to 11231112223 its reverse (32221113211), we get a palindrome (43452225434).

The spelling of 11231112223 in words is "eleven billion, two hundred thirty-one million, one hundred twelve thousand, two hundred twenty-three".