13122247 has 2 divisors, whose sum is σ = 13122248. Its totient is φ = 13122246.

The previous prime is 13122229. The next prime is 13122251. The reversal of 13122247 is 74222131.

13122247 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 a cyclic number.

It is not a de Polignac number, because 13122247 - 2⁷ = 13122119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13122227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561123 + 6561124.

It is an arithmetic number, because the mean of its divisors is an integer number (6561124).

Almost surely, 2^13122247 is an apocalyptic number.

13122247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122247 is an equidigital number, since it uses as much as digits as its factorization.

13122247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 22.

The square root of 13122247 is about 3622.4642165244. The cubic root of 13122247 is about 235.8682054035.

Adding to 13122247 its reverse (74222131), we get a palindrome (87344378).

The spelling of 13122247 in words is "thirteen million, one hundred twenty-two thousand, two hundred forty-seven".