111220232240 has 160 divisors (see below), whose sum is σ = 287177619456. Its totient is φ = 39800171520.

The previous prime is 111220232173. The next prime is 111220232243. The reversal of 111220232240 is 42232022111.

111220232240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (111220232243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5023595 + ... + 5045685.

Almost surely, 2^111220232240 is an apocalyptic number.

111220232240 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 111220232240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143588809728).

111220232240 is an abundant number, since it is smaller than the sum of its proper divisors (175957387216).

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

111220232240 is a wasteful number, since it uses less digits than its factorization.

111220232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22267 (or 22261 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 111220232240 its reverse (42232022111), we get a palindrome (153452254351).

The spelling of 111220232240 in words is "one hundred eleven billion, two hundred twenty million, two hundred thirty-two thousand, two hundred forty".