12213608 has 32 divisors (see below), whose sum is σ = 25522560. Its totient is φ = 5431680.

The previous prime is 12213601. The next prime is 12213623. The reversal of 12213608 is 80631221.

It is not an unprimeable number, because it can be changed into a prime (12213601) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2660 + ... + 5612.

It is an arithmetic number, because the mean of its divisors is an integer number (797580).

Almost surely, 2^12213608 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 12213608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12761280).

12213608 is an abundant number, since it is smaller than the sum of its proper divisors (13308952).

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

12213608 is a wasteful number, since it uses less digits than its factorization.

12213608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017 (or 3013 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12213608 is about 3494.7972759518. The cubic root of 12213608 is about 230.2933119895.

Adding to 12213608 its reverse (80631221), we get a palindrome (92844829).

It can be divided in two parts, 12213 and 608, that added together give a palindrome (12821).

The spelling of 12213608 in words is "twelve million, two hundred thirteen thousand, six hundred eight".