1112200020 has 144 divisors (see below), whose sum is σ = 3577287168. Its totient is φ = 279210240.

The previous prime is 1112200009. The next prime is 1112200039. The reversal of 1112200020 is 200022111.

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 = 1112199975 and 1112200011.

It is a congruent number.

It is an unprimeable number.

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, 203767 + ... + 209153.

It is an arithmetic number, because the mean of its divisors is an integer number (24842272).

Almost surely, 2^1112200020 is an apocalyptic number.

1112200020 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 1112200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788643584).

1112200020 is an abundant number, since it is smaller than the sum of its proper divisors (2465087148).

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

1112200020 is a wasteful number, since it uses less digits than its factorization.

1112200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470 (or 5465 counting only the distinct ones).

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

The square root of 1112200020 is about 33349.6629668127. The cubic root of 1112200020 is about 1036.0824074915.

Adding to 1112200020 its reverse (200022111), we get a palindrome (1312222131).

The spelling of 1112200020 in words is "one billion, one hundred twelve million, two hundred thousand, twenty".