111443111 has 8 divisors (see below), whose sum is σ = 120881040. Its totient is φ = 102128832.

The previous prime is 111443099. The next prime is 111443131. The reversal of 111443111 is 111344111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111443111 - 2¹⁴ = 111426727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111443111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111443131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29030 + ... + 32643.

It is an arithmetic number, because the mean of its divisors is an integer number (15110130).

Almost surely, 2^111443111 is an apocalyptic number.

111443111 is a deficient number, since it is larger than the sum of its proper divisors (9437929).

111443111 is a wasteful number, since it uses less digits than its factorization.

111443111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61825.

The product of its digits is 48, while the sum is 17.

The square root of 111443111 is about 10556.6619250595. The cubic root of 111443111 is about 481.2282073451.

Adding to 111443111 its reverse (111344111), we get a palindrome (222787222).

The spelling of 111443111 in words is "one hundred eleven million, four hundred forty-three thousand, one hundred eleven".