111303232020 has 108 divisors (see below), whose sum is σ = 346992049404. Its totient is φ = 28878612480.

The previous prime is 111303231917. The next prime is 111303232037. The reversal of 111303232020 is 20232303111.

111303232020 is a `hidden beast` number, since 11 + 130 + 323 + 202 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 8535542544 + 102767689476 = 92388^2 + 320574^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111303231984 and 111303232002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20580 + ... + 472260.

Almost surely, 2^111303232020 is an apocalyptic number.

111303232020 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 111303232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173496024702).

111303232020 is an abundant number, since it is smaller than the sum of its proper divisors (235688817384).

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

111303232020 is a wasteful number, since it uses less digits than its factorization.

111303232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451770 (or 451728 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 111303232020 its reverse (20232303111), we get a palindrome (131535535131).

The spelling of 111303232020 in words is "one hundred eleven billion, three hundred three million, two hundred thirty-two thousand, twenty".