111112111110 has 384 divisors, whose sum is σ = 370548605952. Its totient is φ = 20733926400.

The previous prime is 111112111079. The next prime is 111112111141. The reversal of 111112111110 is 11111211111.

It is an interprime number because it is at equal distance from previous prime (111112111079) and next prime (111112111141).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12217665 + ... + 12226755.

It is an arithmetic number, because the mean of its divisors is an integer number (964970328).

Almost surely, 2^111112111110 is an apocalyptic number.

111112111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111112111110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185274302976).

111112111110 is an abundant number, since it is smaller than the sum of its proper divisors (259436494842).

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

111112111110 is a wasteful number, since it uses less digits than its factorization.

111112111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9180 (or 9169 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 111112111110 its reverse (11111211111), we get a palindrome (122223322221).

It can be divided in two parts, 111112 and 111110, that added together give a palindrome (222222).

The spelling of 111112111110 in words is "one hundred eleven billion, one hundred twelve million, one hundred eleven thousand, one hundred ten".