12208169 has 2 divisors, whose sum is σ = 12208170. Its totient is φ = 12208168.

The previous prime is 12208153. The next prime is 12208171. The reversal of 12208169 is 96180221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12166144 + 42025 = 3488^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 12208169 - 2⁴ = 12208153 is a prime.

It is a super-2 number, since 2×12208169² = 298078780665122, which contains 22 as substring.

Together with 12208171, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12208069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104084 + 6104085.

It is an arithmetic number, because the mean of its divisors is an integer number (6104085).

Almost surely, 2^12208169 is an apocalyptic number.

It is an amenable number.

12208169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12208169 is an equidigital number, since it uses as much as digits as its factorization.

12208169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 12208169 is about 3494.0190325755. The cubic root of 12208169 is about 230.2591219478.

The spelling of 12208169 in words is "twelve million, two hundred eight thousand, one hundred sixty-nine".