20320320333211 has 4 divisors (see below), whose sum is σ = 20320348531624. Its totient is φ = 20320292134800.

The previous prime is 20320320333197. The next prime is 20320320333221. The reversal of 20320320333211 is 11233302302302.

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

It is a cyclic number.

It is not a de Polignac number, because 20320320333211 - 2¹⁹ = 20320319808923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320320333221) 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, 12989145 + ... + 14469226.

It is an arithmetic number, because the mean of its divisors is an integer number (5080087132906).

Almost surely, 2^{20320320333211} is an apocalyptic number.

20320320333211 is a deficient number, since it is larger than the sum of its proper divisors (28198413).

20320320333211 is an equidigital number, since it uses as much as digits as its factorization.

20320320333211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28198412.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20320320333211 its reverse (11233302302302), we get a palindrome (31553622635513).

The spelling of 20320320333211 in words is "twenty trillion, three hundred twenty billion, three hundred twenty million, three hundred thirty-three thousand, two hundred eleven".