1313221011293 has 2 divisors, whose sum is σ = 1313221011294. Its totient is φ = 1313221011292.

The previous prime is 1313221011269. The next prime is 1313221011373. The reversal of 1313221011293 is 3921101223131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1293091928164 + 20129083129 = 1137142^2 + 141877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313221011293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313221011253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656610505646 + 656610505647.

It is an arithmetic number, because the mean of its divisors is an integer number (656610505647).

Almost surely, 2^{1313221011293} is an apocalyptic number.

It is an amenable number.

1313221011293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313221011293 is an equidigital number, since it uses as much as digits as its factorization.

1313221011293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 1313221011293 in words is "one trillion, three hundred thirteen billion, two hundred twenty-one million, eleven thousand, two hundred ninety-three".