111200000020 has 96 divisors (see below), whose sum is σ = 250308979200. Its totient is φ = 41370393600.

The previous prime is 111199999997. The next prime is 111200000047. The reversal of 111200000020 is 20000002111.

111200000020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 111199999949 and 111200000012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13185205 + ... + 13193635.

It is an arithmetic number, because the mean of its divisors is an integer number (2607385200).

Almost surely, 2^111200000020 is an apocalyptic number.

111200000020 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 111200000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125154489600).

111200000020 is an abundant number, since it is smaller than the sum of its proper divisors (139108979180).

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

111200000020 is a wasteful number, since it uses less digits than its factorization.

111200000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9089 (or 9087 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 111200000020 its reverse (20000002111), we get a palindrome (131200002131).

The spelling of 111200000020 in words is "one hundred eleven billion, two hundred million, twenty", and thus it is an aban number.