12209273 has 2 divisors, whose sum is σ = 12209274. Its totient is φ = 12209272.

The previous prime is 12209269. The next prime is 12209321. The reversal of 12209273 is 37290221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8779369 + 3429904 = 2963^2 + 1852^2 .

It is an emirp because it is prime and its reverse (37290221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12209273 - 2² = 12209269 is a prime.

It is not a weakly prime, because it can be changed into another prime (12209233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104636 + 6104637.

It is an arithmetic number, because the mean of its divisors is an integer number (6104637).

Almost surely, 2^12209273 is an apocalyptic number.

It is an amenable number.

12209273 is a deficient number, since it is larger than the sum of its proper divisors (1).

12209273 is an equidigital number, since it uses as much as digits as its factorization.

12209273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12209273 is about 3494.1770132608. The cubic root of 12209273 is about 230.2660626121.

Adding to 12209273 its reverse (37290221), we get a palindrome (49499494).

The spelling of 12209273 in words is "twelve million, two hundred nine thousand, two hundred seventy-three".