111223311111 has 16 divisors (see below), whose sum is σ = 179754846720. Its totient is φ = 67408067160.

The previous prime is 111223311107. The next prime is 111223311127. The reversal of 111223311111 is 111113322111.

It is not a de Polignac number, because 111223311111 - 2² = 111223311107 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111223311811) 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 15 ways as a sum of consecutive naturals, for example, 187244335 + ... + 187244928.

It is an arithmetic number, because the mean of its divisors is an integer number (11234677920).

Almost surely, 2^111223311111 is an apocalyptic number.

111223311111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111223311111 is a deficient number, since it is larger than the sum of its proper divisors (68531535609).

111223311111 is a wasteful number, since it uses less digits than its factorization.

111223311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374489283 (or 374489277 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

Adding to 111223311111 its reverse (111113322111), we get a palindrome (222336633222).

It can be divided in two parts, 11122 and 3311111, that added together give a palindrome (3322233).

The spelling of 111223311111 in words is "one hundred eleven billion, two hundred twenty-three million, three hundred eleven thousand, one hundred eleven".