1112011020 has 144 divisors (see below), whose sum is σ = 3521804832. Its totient is φ = 283745280.

The previous prime is 1112011001. The next prime is 1112011027. The reversal of 1112011020 is 201102111.

It is a happy number.

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 = 1112010993 and 1112011011.

It is not an unprimeable number, because it can be changed into a prime (1112011027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389719 + ... + 392561.

It is an arithmetic number, because the mean of its divisors is an integer number (24456978).

Almost surely, 2^1112011020 is an apocalyptic number.

1112011020 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 1112011020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1760902416).

1112011020 is an abundant number, since it is smaller than the sum of its proper divisors (2409793812).

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

1112011020 is a wasteful number, since it uses less digits than its factorization.

1112011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952 (or 2947 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1112011020 is about 33346.8292345764. The cubic root of 1112011020 is about 1036.0237158100.

Adding to 1112011020 its reverse (201102111), we get a palindrome (1313113131).

The spelling of 1112011020 in words is "one billion, one hundred twelve million, eleven thousand, twenty".