111111222111102 has 24 divisors (see below), whose sum is σ = 243078272324784. Its totient is φ = 36677490793344.

The previous prime is 111111222111091. The next prime is 111111222111143. The reversal of 111111222111102 is 201111222111111.

111111222111102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29965268403 + ... + 29965272110.

It is an arithmetic number, because the mean of its divisors is an integer number (10128261346866).

Almost surely, 2^{111111222111102} is an apocalyptic number.

111111222111102 is an abundant number, since it is smaller than the sum of its proper divisors (131967050213682).

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

111111222111102 is a wasteful number, since it uses less digits than its factorization.

111111222111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59930540624 (or 59930540621 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 111111222111102 its reverse (201111222111111), we get a palindrome (312222444222213).

Subtracting 111111222111102 from its reverse (201111222111111), we obtain a palindrome (90000000000009).

The spelling of 111111222111102 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, one hundred two".