1245322221317 has 2 divisors, whose sum is σ = 1245322221318. Its totient is φ = 1245322221316.

The previous prime is 1245322221307. The next prime is 1245322221373. The reversal of 1245322221317 is 7131222235421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022189749156 + 223132472161 = 1011034^2 + 472369^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245322221317 - 2³² = 1241027254021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245322221307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622661110658 + 622661110659.

It is an arithmetic number, because the mean of its divisors is an integer number (622661110659).

Almost surely, 2^{1245322221317} is an apocalyptic number.

It is an amenable number.

1245322221317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245322221317 is an equidigital number, since it uses as much as digits as its factorization.

1245322221317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

Adding to 1245322221317 its reverse (7131222235421), we get a palindrome (8376544456738).

The spelling of 1245322221317 in words is "one trillion, two hundred forty-five billion, three hundred twenty-two million, two hundred twenty-one thousand, three hundred seventeen".