13224137 has 2 divisors, whose sum is σ = 13224138. Its totient is φ = 13224136.

The previous prime is 13224131. The next prime is 13224139. The reversal of 13224137 is 73142231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11363641 + 1860496 = 3371^2 + 1364^2 .

It is a cyclic number.

It is not a de Polignac number, because 13224137 - 2¹² = 13220041 is a prime.

Together with 13224139, 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 (13224131) 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, 6612068 + 6612069.

It is an arithmetic number, because the mean of its divisors is an integer number (6612069).

Almost surely, 2^13224137 is an apocalyptic number.

It is an amenable number.

13224137 is a deficient number, since it is larger than the sum of its proper divisors (1).

13224137 is an equidigital number, since it uses as much as digits as its factorization.

13224137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 23.

The square root of 13224137 is about 3636.5006531005. The cubic root of 13224137 is about 236.4771122107.

Adding to 13224137 its reverse (73142231), we get a palindrome (86366368).

The spelling of 13224137 in words is "thirteen million, two hundred twenty-four thousand, one hundred thirty-seven".