111300020520 has 128 divisors (see below), whose sum is σ = 359959904640. Its totient is φ = 27368340480.

The previous prime is 111300020497. The next prime is 111300020569. The reversal of 111300020520 is 25020003111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111300020520.

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, 1478022 + ... + 1551498.

It is an arithmetic number, because the mean of its divisors is an integer number (2812186755).

Almost surely, 2^111300020520 is an apocalyptic number.

111300020520 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 111300020520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179979952320).

111300020520 is an abundant number, since it is smaller than the sum of its proper divisors (248659884120).

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

111300020520 is a wasteful number, since it uses less digits than its factorization.

111300020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74475 (or 74471 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 111300020520 its reverse (25020003111), we get a palindrome (136320023631).

The spelling of 111300020520 in words is "one hundred eleven billion, three hundred million, twenty thousand, five hundred twenty".