111013020 has 72 divisors (see below), whose sum is σ = 338607360. Its totient is φ = 29439360.

The previous prime is 111012997. The next prime is 111013027. The reversal of 111013020 is 20310111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111012993 and 111013011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111013027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32766 + ... + 35994.

It is an arithmetic number, because the mean of its divisors is an integer number (4702880).

Almost surely, 2^111013020 is an apocalyptic number.

111013020 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 111013020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169303680).

111013020 is an abundant number, since it is smaller than the sum of its proper divisors (227594340).

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

111013020 is a wasteful number, since it uses less digits than its factorization.

111013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435 (or 3430 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 111013020 is about 10536.2716365895. The cubic root of 111013020 is about 480.6083432545.

Adding to 111013020 its reverse (20310111), we get a palindrome (131323131).

The spelling of 111013020 in words is "one hundred eleven million, thirteen thousand, twenty".