111111000111000 has 384 divisors, whose sum is σ = 408393889450560. Its totient is φ = 27132986880000.

The previous prime is 111111000110989. The next prime is 111111000111029. The reversal of 111111000111000 is 111000111111.

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

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4152726 + ... + 15474725.

Almost surely, 2^{111111000111000} is an apocalyptic number.

111111000111000 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 111111000111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204196944725280).

111111000111000 is an abundant number, since it is smaller than the sum of its proper divisors (297282889339560).

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

111111000111000 is a wasteful number, since it uses less digits than its factorization.

111111000111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627532 (or 19627515 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111111000111000 its reverse (111000111111), we get a palindrome (111222000222111).

The spelling of 111111000111000 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven thousand".