12622271 has 2 divisors, whose sum is σ = 12622272. Its totient is φ = 12622270.

The previous prime is 12622223. The next prime is 12622297. The reversal of 12622271 is 17222621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12622271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12622201) 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, 6311135 + 6311136.

It is an arithmetic number, because the mean of its divisors is an integer number (6311136).

Almost surely, 2^12622271 is an apocalyptic number.

12622271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12622271 is an equidigital number, since it uses as much as digits as its factorization.

12622271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 12622271 is about 3552.7835565933. The cubic root of 12622271 is about 232.8336966512.

Adding to 12622271 its reverse (17222621), we get a palindrome (29844892).

The spelling of 12622271 in words is "twelve million, six hundred twenty-two thousand, two hundred seventy-one".