13321012243243 has 16 divisors (see below), whose sum is σ = 14159340914400. Its totient is φ = 12510431377920.

The previous prime is 13321012243141. The next prime is 13321012243271. The reversal of 13321012243243 is 34234221012331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321012243243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321012243043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21862228 + ... + 22463281.

It is an arithmetic number, because the mean of its divisors is an integer number (884958807150).

Almost surely, 2^{13321012243243} is an apocalyptic number.

13321012243243 is a deficient number, since it is larger than the sum of its proper divisors (838328671157).

13321012243243 is a wasteful number, since it uses less digits than its factorization.

13321012243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44325822.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 13321012243243 its reverse (34234221012331), we get a palindrome (47555233255574).

The spelling of 13321012243243 in words is "thirteen trillion, three hundred twenty-one billion, twelve million, two hundred forty-three thousand, two hundred forty-three".