1112002020 has 96 divisors (see below), whose sum is σ = 3502410240. Its totient is φ = 296522208.

The previous prime is 1112002007. The next prime is 1112002027. The reversal of 1112002020 is 202002111.

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 = 1112001993 and 1112002011.

It is not an unprimeable number, because it can be changed into a prime (1112002027) 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, 31029 + ... + 56451.

It is an arithmetic number, because the mean of its divisors is an integer number (36483440).

Almost surely, 2^1112002020 is an apocalyptic number.

1112002020 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 1112002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751205120).

1112002020 is an abundant number, since it is smaller than the sum of its proper divisors (2390408220).

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

1112002020 is an equidigital number, since it uses as much as digits as its factorization.

1112002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25453 (or 25433 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1112002020 is about 33346.6942889396. The cubic root of 1112002020 is about 1036.0209208021.

Adding to 1112002020 its reverse (202002111), we get a palindrome (1314004131).

Subtracting from 1112002020 its reverse (202002111), we obtain a palindrome (909999909).

The spelling of 1112002020 in words is "one billion, one hundred twelve million, two thousand, twenty".