111205255872 has 112 divisors (see below), whose sum is σ = 304564613120. Its totient is φ = 35782290432.

The previous prime is 111205255867. The next prime is 111205255943. The reversal of 111205255872 is 278552502111.

It is a happy number.

111205255872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 111205255872.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840579 + ... + 963837.

Almost surely, 2^111205255872 is an apocalyptic number.

111205255872 is a gapful number since it is divisible by the number (12) 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 111205255872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152282306560).

111205255872 is an abundant number, since it is smaller than the sum of its proper divisors (193359357248).

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

111205255872 is a wasteful number, since it uses less digits than its factorization.

111205255872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123438 (or 123428 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 39.

Adding to 111205255872 its reverse (278552502111), we get a palindrome (389757757983).

The spelling of 111205255872 in words is "one hundred eleven billion, two hundred five million, two hundred fifty-five thousand, eight hundred seventy-two".