20211310003321 has 4 divisors (see below), whose sum is σ = 20218683705444. Its totient is φ = 20203936301200.

The previous prime is 20211310003319. The next prime is 20211310003351. The reversal of 20211310003321 is 12330001311202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2208897447696 + 18002412555625 = 1486236^2 + 4242925^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211310003321 - 2¹ = 20211310003319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211310003351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3686846950 + ... + 3686852431.

It is an arithmetic number, because the mean of its divisors is an integer number (5054670926361).

Almost surely, 2^{20211310003321} is an apocalyptic number.

It is an amenable number.

20211310003321 is a deficient number, since it is larger than the sum of its proper divisors (7373702123).

20211310003321 is an equidigital number, since it uses as much as digits as its factorization.

20211310003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373702122.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20211310003321 its reverse (12330001311202), we get a palindrome (32541311314523).

The spelling of 20211310003321 in words is "twenty trillion, two hundred eleven billion, three hundred ten million, three thousand, three hundred twenty-one".