111111132223 has 20 divisors (see below), whose sum is σ = 139592899208. Its totient is φ = 87912079920.

The previous prime is 111111132107. The next prime is 111111132227. The reversal of 111111132223 is 322231111111.

It is not a de Polignac number, because 111111132223 - 2⁹ = 111111131711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111111132223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111132227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1748673 + ... + 1811098.

Almost surely, 2^111111132223 is an apocalyptic number.

111111132223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111111132223 is a deficient number, since it is larger than the sum of its proper divisors (28481766985).

111111132223 is an frugal number, since it uses more digits than its factorization.

111111132223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559812 (or 3559791 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

Adding to 111111132223 its reverse (322231111111), we get a palindrome (433342243334).

The spelling of 111111132223 in words is "one hundred eleven billion, one hundred eleven million, one hundred thirty-two thousand, two hundred twenty-three".