12216196 has 12 divisors (see below), whose sum is σ = 21900060. Its totient is φ = 5959040.

The previous prime is 12216187. The next prime is 12216199. The reversal of 12216196 is 69161221.

12216196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3748096 + 8468100 = 1936^2 + 2910^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216199) 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, 37081 + ... + 37408.

It is an arithmetic number, because the mean of its divisors is an integer number (1825005).

Almost surely, 2^12216196 is an apocalyptic number.

It is an amenable number.

12216196 is a deficient number, since it is larger than the sum of its proper divisors (9683864).

12216196 is a wasteful number, since it uses less digits than its factorization.

12216196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74534 (or 74532 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 12216196 is about 3495.1675210210. The cubic root of 12216196 is about 230.3095768257.

The spelling of 12216196 in words is "twelve million, two hundred sixteen thousand, one hundred ninety-six".