2001323303211 has 4 divisors (see below), whose sum is σ = 2668431070952. Its totient is φ = 1334215535472.

The previous prime is 2001323303207. The next prime is 2001323303257. The reversal of 2001323303211 is 1123033231002.

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

It is not a de Polignac number, because 2001323303211 - 2² = 2001323303207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001323303011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333553883866 + ... + 333553883871.

It is an arithmetic number, because the mean of its divisors is an integer number (667107767738).

Almost surely, 2^{2001323303211} is an apocalyptic number.

2001323303211 is a deficient number, since it is larger than the sum of its proper divisors (667107767741).

2001323303211 is an equidigital number, since it uses as much as digits as its factorization.

2001323303211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667107767740.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2001323303211 its reverse (1123033231002), we get a palindrome (3124356534213).

The spelling of 2001323303211 in words is "two trillion, one billion, three hundred twenty-three million, three hundred three thousand, two hundred eleven".