1224255413 has 2 divisors, whose sum is σ = 1224255414. Its totient is φ = 1224255412.

The previous prime is 1224255397. The next prime is 1224255419. The reversal of 1224255413 is 3145524221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1140953284 + 83302129 = 33778^2 + 9127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224255413 - 2⁴ = 1224255397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224255419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612127706 + 612127707.

It is an arithmetic number, because the mean of its divisors is an integer number (612127707).

Almost surely, 2^1224255413 is an apocalyptic number.

It is an amenable number.

1224255413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224255413 is an equidigital number, since it uses as much as digits as its factorization.

1224255413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 29.

The square root of 1224255413 is about 34989.3614260106. The cubic root of 1224255413 is about 1069.7706478465.

Adding to 1224255413 its reverse (3145524221), we get a palindrome (4369779634).

The spelling of 1224255413 in words is "one billion, two hundred twenty-four million, two hundred fifty-five thousand, four hundred thirteen".