13213032299981 has 2 divisors, whose sum is σ = 13213032299982. Its totient is φ = 13213032299980.

The previous prime is 13213032299893. The next prime is 13213032300007. The reversal of 13213032299981 is 18999223031231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9961970875081 + 3251061424900 = 3156259^2 + 1803070^2 .

It is a cyclic number.

It is not a de Polignac number, because 13213032299981 - 2¹⁰ = 13213032298957 is a prime.

It is a super-2 number, since 2×13213032299981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13213032299081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606516149990 + 6606516149991.

It is an arithmetic number, because the mean of its divisors is an integer number (6606516149991).

Almost surely, 2^{13213032299981} is an apocalyptic number.

It is an amenable number.

13213032299981 is a deficient number, since it is larger than the sum of its proper divisors (1).

13213032299981 is an equidigital number, since it uses as much as digits as its factorization.

13213032299981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The spelling of 13213032299981 in words is "thirteen trillion, two hundred thirteen billion, thirty-two million, two hundred ninety-nine thousand, nine hundred eighty-one".