1224215413 has 2 divisors, whose sum is σ = 1224215414. Its totient is φ = 1224215412.

The previous prime is 1224215393. The next prime is 1224215471. The reversal of 1224215413 is 3145124221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129094404 + 95121009 = 33602^2 + 9753^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224215413 - 2²⁹ = 687344501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224255413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612107706 + 612107707.

It is an arithmetic number, because the mean of its divisors is an integer number (612107707).

Almost surely, 2^1224215413 is an apocalyptic number.

It is an amenable number.

1224215413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224215413 is an equidigital number, since it uses as much as digits as its factorization.

1224215413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 1224215413 is about 34988.7898190263. The cubic root of 1224215413 is about 1069.7589968758.

Adding to 1224215413 its reverse (3145124221), we get a palindrome (4369339634).

The spelling of 1224215413 in words is "one billion, two hundred twenty-four million, two hundred fifteen thousand, four hundred thirteen".