12821413335697 has 2 divisors, whose sum is σ = 12821413335698. Its totient is φ = 12821413335696.

The previous prime is 12821413335691. The next prime is 12821413335739. The reversal of 12821413335697 is 79653331412821.

12821413335697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9501288397056 + 3320124938641 = 3082416^2 + 1822121^2 .

It is an emirp because it is prime and its reverse (79653331412821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12821413335697 - 2⁷ = 12821413335569 is a prime.

It is not a weakly prime, because it can be changed into another prime (12821413335691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6410706667848 + 6410706667849.

It is an arithmetic number, because the mean of its divisors is an integer number (6410706667849).

Almost surely, 2^{12821413335697} is an apocalyptic number.

It is an amenable number.

12821413335697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12821413335697 is an equidigital number, since it uses as much as digits as its factorization.

12821413335697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 55.

The spelling of 12821413335697 in words is "twelve trillion, eight hundred twenty-one billion, four hundred thirteen million, three hundred thirty-five thousand, six hundred ninety-seven".