1223210717 has 2 divisors, whose sum is σ = 1223210718. Its totient is φ = 1223210716.

The previous prime is 1223210693. The next prime is 1223210731. The reversal of 1223210717 is 7170123221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1213407556 + 9803161 = 34834^2 + 3131^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223210717 - 2¹⁴ = 1223194333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223210777) 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, 611605358 + 611605359.

It is an arithmetic number, because the mean of its divisors is an integer number (611605359).

Almost surely, 2^1223210717 is an apocalyptic number.

It is an amenable number.

1223210717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223210717 is an equidigital number, since it uses as much as digits as its factorization.

1223210717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 1223210717 is about 34974.4294735454. The cubic root of 1223210717 is about 1069.4662715031.

Adding to 1223210717 its reverse (7170123221), we get a palindrome (8393333938).

The spelling of 1223210717 in words is "one billion, two hundred twenty-three million, two hundred ten thousand, seven hundred seventeen".