1213333245217 has 2 divisors, whose sum is σ = 1213333245218. Its totient is φ = 1213333245216.

The previous prime is 1213333245203. The next prime is 1213333245251. The reversal of 1213333245217 is 7125423333121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154767309201 + 58565936016 = 1074601^2 + 242004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213333245217 - 2²³ = 1213324856609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213333215217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606666622608 + 606666622609.

It is an arithmetic number, because the mean of its divisors is an integer number (606666622609).

Almost surely, 2^{1213333245217} is an apocalyptic number.

It is an amenable number.

1213333245217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213333245217 is an equidigital number, since it uses as much as digits as its factorization.

1213333245217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

Adding to 1213333245217 its reverse (7125423333121), we get a palindrome (8338756578338).

The spelling of 1213333245217 in words is "one trillion, two hundred thirteen billion, three hundred thirty-three million, two hundred forty-five thousand, two hundred seventeen".