111111102 has 40 divisors (see below), whose sum is σ = 254285856. Its totient is φ = 36246528.

The previous prime is 111111089. The next prime is 111111109. The reversal of 111111102 is 201111111.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 318 + ... + 14910.

Almost surely, 2^111111102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111111102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127142928).

111111102 is an abundant number, since it is smaller than the sum of its proper divisors (143174754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111111102 is a wasteful number, since it uses less digits than its factorization.

111111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14654 (or 14645 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 111111102 is about 10540.9251017166. The cubic root of 111111102 is about 480.7498436286.

Adding to 111111102 its reverse (201111111), we get a palindrome (312222213).

Subtracting 111111102 from its reverse (201111111), we obtain a palindrome (90000009).

The spelling of 111111102 in words is "one hundred eleven million, one hundred eleven thousand, one hundred two".