12216497 has 2 divisors, whose sum is σ = 12216498. Its totient is φ = 12216496.

The previous prime is 12216493. The next prime is 12216499. The reversal of 12216497 is 79461221.

It is a happy number.

12216497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7789681 + 4426816 = 2791^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 12216497 - 2² = 12216493 is a prime.

Together with 12216499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12216493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108248 + 6108249.

It is an arithmetic number, because the mean of its divisors is an integer number (6108249).

Almost surely, 2^12216497 is an apocalyptic number.

It is an amenable number.

12216497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12216497 is an equidigital number, since it uses as much as digits as its factorization.

12216497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 12216497 is about 3495.2105802083. The cubic root of 12216497 is about 230.3114683751.

The spelling of 12216497 in words is "twelve million, two hundred sixteen thousand, four hundred ninety-seven".