12699227 has 2 divisors, whose sum is σ = 12699228. Its totient is φ = 12699226.

The previous prime is 12699223. The next prime is 12699229. The reversal of 12699227 is 72299621.

12699227 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 is an emirp because it is prime and its reverse (72299621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12699227 - 2² = 12699223 is a prime.

It is a super-2 number, since 2×12699227² = 322540732795058, which contains 22 as substring.

Together with 12699229, 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 (12699223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6349613 + 6349614.

It is an arithmetic number, because the mean of its divisors is an integer number (6349614).

Almost surely, 2^12699227 is an apocalyptic number.

12699227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12699227 is an equidigital number, since it uses as much as digits as its factorization.

12699227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 12699227 is about 3563.5974800754. The cubic root of 12699227 is about 233.3059217232.

The spelling of 12699227 in words is "twelve million, six hundred ninety-nine thousand, two hundred twenty-seven".