12209197 has 16 divisors (see below), whose sum is σ = 16394112. Its totient is φ = 8781120.

The previous prime is 12209167. The next prime is 12209207. The reversal of 12209197 is 79190221.

12209197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12209197 - 2²³ = 3820589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12209137) 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, 5098 + ... + 7099.

It is an arithmetic number, because the mean of its divisors is an integer number (1024632).

Almost surely, 2^12209197 is an apocalyptic number.

It is an amenable number.

12209197 is a deficient number, since it is larger than the sum of its proper divisors (4184915).

12209197 is a wasteful number, since it uses less digits than its factorization.

12209197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12228.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 12209197 is about 3494.1661380078. The cubic root of 12209197 is about 230.2655848261.

The spelling of 12209197 in words is "twelve million, two hundred nine thousand, one hundred ninety-seven".