111012103 has 4 divisors (see below), whose sum is σ = 112259520. Its totient is φ = 109764688.

The previous prime is 111012067. The next prime is 111012149. The reversal of 111012103 is 301210111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111012103 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 111012103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012403) 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, 623575 + ... + 623752.

It is an arithmetic number, because the mean of its divisors is an integer number (28064880).

Almost surely, 2^111012103 is an apocalyptic number.

111012103 is a deficient number, since it is larger than the sum of its proper divisors (1247417).

111012103 is an equidigital number, since it uses as much as digits as its factorization.

111012103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247416.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 111012103 is about 10536.2281201576. The cubic root of 111012103 is about 480.6070199290.

Adding to 111012103 its reverse (301210111), we get a palindrome (412222214).

The spelling of 111012103 in words is "one hundred eleven million, twelve thousand, one hundred three".