12052216 has 32 divisors (see below), whose sum is σ = 24842880. Its totient is φ = 5436000.

The previous prime is 12052199. The next prime is 12052219. The reversal of 12052216 is 61225021.

It is a junction number, because it is equal to n+sod(n) for n = 12052193 and 12052202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12052219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12835 + ... + 13741.

It is an arithmetic number, because the mean of its divisors is an integer number (776340).

Almost surely, 2^12052216 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 12052216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12421440).

12052216 is an abundant number, since it is smaller than the sum of its proper divisors (12790664).

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

12052216 is a wasteful number, since it uses less digits than its factorization.

12052216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12052216 is about 3471.6301646345. The cubic root of 12052216 is about 229.2744369069.

Adding to 12052216 its reverse (61225021), we get a palindrome (73277237).

The spelling of 12052216 in words is "twelve million, fifty-two thousand, two hundred sixteen".