12196209 has 4 divisors (see below), whose sum is σ = 16261616. Its totient is φ = 8130804.

The previous prime is 12196207. The next prime is 12196213. The reversal of 12196209 is 90269121.

It is a happy number.

12196209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90269121 = 3 ⋅30089707.

It is not a de Polignac number, because 12196209 - 2¹ = 12196207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12196207) 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, 2032699 + ... + 2032704.

It is an arithmetic number, because the mean of its divisors is an integer number (4065404).

Almost surely, 2^12196209 is an apocalyptic number.

It is an amenable number.

12196209 is a deficient number, since it is larger than the sum of its proper divisors (4065407).

12196209 is an equidigital number, since it uses as much as digits as its factorization.

12196209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065406.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 12196209 is about 3492.3071170789. The cubic root of 12196209 is about 230.1839045833.

The spelling of 12196209 in words is "twelve million, one hundred ninety-six thousand, two hundred nine".