1213381068353 has 2 divisors, whose sum is σ = 1213381068354. Its totient is φ = 1213381068352.

The previous prime is 1213381068349. The next prime is 1213381068457. The reversal of 1213381068353 is 3538601833121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1169529776704 + 43851291649 = 1081448^2 + 209407^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213381068353 - 2² = 1213381068349 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213381068343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606690534176 + 606690534177.

It is an arithmetic number, because the mean of its divisors is an integer number (606690534177).

Almost surely, 2^{1213381068353} is an apocalyptic number.

It is an amenable number.

1213381068353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213381068353 is an equidigital number, since it uses as much as digits as its factorization.

1213381068353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 1213381068353 in words is "one trillion, two hundred thirteen billion, three hundred eighty-one million, sixty-eight thousand, three hundred fifty-three".