12208161 has 8 divisors (see below), whose sum is σ = 18602944. Its totient is φ = 6976080.

The previous prime is 12208153. The next prime is 12208169. The reversal of 12208161 is 16180221.

12208161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12208153) and next prime (12208169).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12208161 - 2³ = 12208153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 581341 = 12208161 / (1 + 2 + 2 + 0 + 8 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12208169) 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, 290650 + ... + 290691.

It is an arithmetic number, because the mean of its divisors is an integer number (2325368).

Almost surely, 2^12208161 is an apocalyptic number.

It is an amenable number.

12208161 is a deficient number, since it is larger than the sum of its proper divisors (6394783).

12208161 is an equidigital number, since it uses as much as digits as its factorization.

12208161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581351.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 12208161 is about 3494.0178877619. The cubic root of 12208161 is about 230.2590716516.

Adding to 12208161 its reverse (16180221), we get a palindrome (28388382).

The spelling of 12208161 in words is "twelve million, two hundred eight thousand, one hundred sixty-one".