111111112222223 has 16 divisors (see below), whose sum is σ = 111643430444256. Its totient is φ = 110580301802880.

The previous prime is 111111112222217. The next prime is 111111112222237. The reversal of 111111112222223 is 322222211111111.

It is a cyclic number.

It is not a de Polignac number, because 111111112222223 - 2³⁴ = 111093932353039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111112222823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398948165 + ... + 399226577.

It is an arithmetic number, because the mean of its divisors is an integer number (6977714402766).

Almost surely, 2^{111111112222223} is an apocalyptic number.

111111112222223 is a deficient number, since it is larger than the sum of its proper divisors (532318222033).

111111112222223 is a wasteful number, since it uses less digits than its factorization.

111111112222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281114.

The product of its digits is 192, while the sum is 23.

Adding to 111111112222223 its reverse (322222211111111), we get a palindrome (433333323333334).

The spelling of 111111112222223 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-three".