12201112 has 64 divisors (see below), whose sum is σ = 29548800. Its totient is φ = 4583040.

The previous prime is 12201089. The next prime is 12201131. The reversal of 12201112 is 21110221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17523 + ... + 18205.

It is an arithmetic number, because the mean of its divisors is an integer number (461700).

Almost surely, 2^12201112 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 12201112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14774400).

12201112 is an abundant number, since it is smaller than the sum of its proper divisors (17347688).

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

12201112 is a wasteful number, since it uses less digits than its factorization.

12201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12201112 is about 3493.0090180244. The cubic root of 12201112 is about 230.2147458740.

Adding to 12201112 its reverse (21110221), we get a palindrome (33311333).

It can be divided in two parts, 1220 and 1112, that added together give a palindrome (2332).

The spelling of 12201112 in words is "twelve million, two hundred one thousand, one hundred twelve".