111123232111 has 4 divisors (see below), whose sum is σ = 111123904000. Its totient is φ = 111122560224.

The previous prime is 111123232061. The next prime is 111123232123. The reversal of 111123232111 is 111232321111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 111123232111 - 2¹⁷ = 111123101039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111123232511) 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, 105490 + ... + 483088.

It is an arithmetic number, because the mean of its divisors is an integer number (27780976000).

Almost surely, 2^111123232111 is an apocalyptic number.

111123232111 is a deficient number, since it is larger than the sum of its proper divisors (671889).

111123232111 is an equidigital number, since it uses as much as digits as its factorization.

111123232111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671888.

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

Adding to 111123232111 its reverse (111232321111), we get a palindrome (222355553222).

The spelling of 111123232111 in words is "one hundred eleven billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred eleven".