111123055 has 4 divisors (see below), whose sum is σ = 133347672. Its totient is φ = 88898440.

The previous prime is 111123049. The next prime is 111123071. The reversal of 111123055 is 550321111.

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

It is not a de Polignac number, because 111123055 - 2¹¹ = 111121007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11112301 + ... + 11112310.

It is an arithmetic number, because the mean of its divisors is an integer number (33336918).

Almost surely, 2^111123055 is an apocalyptic number.

111123055 is a deficient number, since it is larger than the sum of its proper divisors (22224617).

111123055 is an equidigital number, since it uses as much as digits as its factorization.

111123055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22224616.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 111123055 is about 10541.4920670653. The cubic root of 111123055 is about 480.7670822206.

Adding to 111123055 its reverse (550321111), we get a palindrome (661444166).

The spelling of 111123055 in words is "one hundred eleven million, one hundred twenty-three thousand, fifty-five".