1223112 has 64 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 358400.

The previous prime is 1223093. The next prime is 1223119. The reversal of 1223112 is 2113221.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10768 + ... + 10880.

It is an arithmetic number, because the mean of its divisors is an integer number (53865).

2^1223112 is an apocalyptic number.

1223112 is a gapful number since it is divisible by the number (12) 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 1223112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723680).

1223112 is an abundant number, since it is smaller than the sum of its proper divisors (2224248).

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

1223112 is a wasteful number, since it uses less digits than its factorization.

1223112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 170 counting only the distinct ones).

The product of its digits is 24, while the sum is 12.

The square root of 1223112 is about 1105.9439407131. The cubic root of 1223112 is about 106.9437500951.

1223112 divided by its sum of digits (12) gives a triangular number (101926 = T₄₅₁).

Adding to 1223112 its reverse (2113221), we get a palindrome (3336333).

The spelling of 1223112 in words is "one million, two hundred twenty-three thousand, one hundred twelve".