1224633217 has 2 divisors, whose sum is σ = 1224633218. Its totient is φ = 1224633216.

The previous prime is 1224633197. The next prime is 1224633251. The reversal of 1224633217 is 7123364221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 659667856 + 564965361 = 25684^2 + 23769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224633217 - 2²⁷ = 1090415489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224633287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612316608 + 612316609.

It is an arithmetic number, because the mean of its divisors is an integer number (612316609).

Almost surely, 2^1224633217 is an apocalyptic number.

It is an amenable number.

1224633217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224633217 is an equidigital number, since it uses as much as digits as its factorization.

1224633217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 1224633217 is about 34994.7598505833. The cubic root of 1224633217 is about 1069.8806799138.

Adding to 1224633217 its reverse (7123364221), we get a palindrome (8347997438).

The spelling of 1224633217 in words is "one billion, two hundred twenty-four million, six hundred thirty-three thousand, two hundred seventeen".