12208213 has 2 divisors, whose sum is σ = 12208214. Its totient is φ = 12208212.

The previous prime is 12208177. The next prime is 12208247. The reversal of 12208213 is 31280221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7091569 + 5116644 = 2663^2 + 2262^2 .

It is a cyclic number.

It is not a de Polignac number, because 12208213 - 2²¹ = 10111061 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12208253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104106 + 6104107.

It is an arithmetic number, because the mean of its divisors is an integer number (6104107).

Almost surely, 2^12208213 is an apocalyptic number.

It is an amenable number.

12208213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12208213 is an equidigital number, since it uses as much as digits as its factorization.

12208213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12208213 is about 3494.0253290439. The cubic root of 12208213 is about 230.2593985765.

Adding to 12208213 its reverse (31280221), we get a palindrome (43488434).

It can be divided in two parts, 12208 and 213, that added together give a palindrome (12421).

The spelling of 12208213 in words is "twelve million, two hundred eight thousand, two hundred thirteen".