111112100000000 has 648 divisors, whose sum is σ = 306336358780704. Its totient is φ = 39884800000000.

The previous prime is 111112099999997. The next prime is 111112100000029. The reversal of 111112100000000 is 1211111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 91299999392 + ... + 91300000608.

Almost surely, 2^{111112100000000} is an apocalyptic number.

111112100000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111112100000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153168179390352).

111112100000000 is an abundant number, since it is smaller than the sum of its proper divisors (195224258780704).

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

111112100000000 is an frugal number, since it uses more digits than its factorization.

111112100000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111112100000000 its reverse (1211111), we get a palindrome (111112101211111).

The spelling of 111112100000000 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred million", and thus it is an aban number.