13311424320021 has 24 divisors (see below), whose sum is σ = 19637475137280. Its totient is φ = 8685130391136.

The previous prime is 13311424319993. The next prime is 13311424320067. The reversal of 13311424320021 is 12002342411331.

13311424320021 is a `hidden beast` number, since 1 + 3 + 3 + 11 + 424 + 3 + 200 + 21 = 666.

It is not a de Polignac number, because 13311424320021 - 2¹⁵ = 13311424287253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311424320071) 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 23 ways as a sum of consecutive naturals, for example, 10510135 + ... + 11708363.

It is an arithmetic number, because the mean of its divisors is an integer number (818228130720).

Almost surely, 2^{13311424320021} is an apocalyptic number.

It is an amenable number.

13311424320021 is a deficient number, since it is larger than the sum of its proper divisors (6326050817259).

13311424320021 is a wasteful number, since it uses less digits than its factorization.

13311424320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224545 (or 1224542 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 13311424320021 its reverse (12002342411331), we get a palindrome (25313766731352).

The spelling of 13311424320021 in words is "thirteen trillion, three hundred eleven billion, four hundred twenty-four million, three hundred twenty thousand, twenty-one".