1122112 has 28 divisors (see below), whose sum is σ = 2263140.
Its totient is φ = 551936.
The previous prime is 1122103. The next prime is 1122113. The reversal of 1122112 is 2112211.
It can be written as a sum of positive squares in 2 ways, for example, as 732736 + 389376 = 856^2 + 624^2
It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.
It is an insolite number, because it is divisible by the sum (16) and by the product (64) of the squares of its digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1122113) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5598 + ... + 5794.
21122112 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131570).
1122112 is an abundant number, since it is smaller than the sum of its proper divisors (1141028).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1122112 is an equidigital number, since it uses as much as digits as its factorization.
1122112 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 298 (or 288 counting only the distinct ones).
The product of its digits is 8, while the sum is 10.
The square root of 1122112 is about 1059.2978806738.
The cubic root of 1122112 is about 103.9151181174.
Adding to 1122112 its reverse (2112211), we get a palindrome (3234323).
Subtracting 1122112 from its reverse (2112211), we obtain a palindrome (990099).
It can be divided in two parts, 112211 and 2, that multiplied together give a palindrome (224422).
The spelling of 1122112 in words is "one million, one hundred twenty-two thousand, one hundred twelve".