20211320320013 has 8 divisors (see below), whose sum is σ = 20288941499520. Its totient is φ = 20133717557040.

The previous prime is 20211320319991. The next prime is 20211320320063. The reversal of 20211320320013 is 31002302311202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211320320013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211320320063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402993 + ... + 6796838.

It is an arithmetic number, because the mean of its divisors is an integer number (2536117687440).

Almost surely, 2^{20211320320013} is an apocalyptic number.

It is an amenable number.

20211320320013 is a deficient number, since it is larger than the sum of its proper divisors (77621179507).

20211320320013 is an equidigital number, since it uses as much as digits as its factorization.

20211320320013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208267.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20211320320013 its reverse (31002302311202), we get a palindrome (51213622631215).

The spelling of 20211320320013 in words is "twenty trillion, two hundred eleven billion, three hundred twenty million, three hundred twenty thousand, thirteen".