111111103 has 4 divisors (see below), whose sum is σ = 111216888. Its totient is φ = 111005320.

The previous prime is 111111089. The next prime is 111111109. The reversal of 111111103 is 301111111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301111111 = 7 ⋅43015873.

It is a cyclic number.

It is not a de Polignac number, because 111111103 - 2⁹ = 111110591 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 111111103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111109) 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, 51301 + ... + 53422.

It is an arithmetic number, because the mean of its divisors is an integer number (27804222).

Almost surely, 2^111111103 is an apocalyptic number.

111111103 is a deficient number, since it is larger than the sum of its proper divisors (105785).

111111103 is a wasteful number, since it uses less digits than its factorization.

111111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105784.

The product of its (nonzero) digits is 3, while the sum is 10.

The square root of 111111103 is about 10540.9251491508. The cubic root of 111111103 is about 480.7498450709.

Adding to 111111103 its reverse (301111111), we get a palindrome (412222214).

The spelling of 111111103 in words is "one hundred eleven million, one hundred eleven thousand, one hundred three".