13121641333 has 2 divisors, whose sum is σ = 13121641334. Its totient is φ = 13121641332.

The previous prime is 13121641327. The next prime is 13121641399. The reversal of 13121641333 is 33314612131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12812655249 + 308986084 = 113193^2 + 17578^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121641333 - 2⁹ = 13121640821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121642333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560820666 + 6560820667.

It is an arithmetic number, because the mean of its divisors is an integer number (6560820667).

Almost surely, 2^13121641333 is an apocalyptic number.

It is an amenable number.

13121641333 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121641333 is an equidigital number, since it uses as much as digits as its factorization.

13121641333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The spelling of 13121641333 in words is "thirteen billion, one hundred twenty-one million, six hundred forty-one thousand, three hundred thirty-three".