2001323223211 has 16 divisors (see below), whose sum is σ = 2288073160800. Its totient is φ = 1734118460928.

The previous prime is 2001323223197. The next prime is 2001323223217. The reversal of 2001323223211 is 1123223231002.

It is a cyclic number.

It is not a de Polignac number, because 2001323223211 - 2⁷ = 2001323223083 is a prime.

It is a super-2 number, since 2×2001323223211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001323223217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11863156 + ... + 12030673.

It is an arithmetic number, because the mean of its divisors is an integer number (143004572550).

Almost surely, 2^{2001323223211} is an apocalyptic number.

2001323223211 is a deficient number, since it is larger than the sum of its proper divisors (286749937589).

2001323223211 is a wasteful number, since it uses less digits than its factorization.

2001323223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23894238.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2001323223211 its reverse (1123223231002), we get a palindrome (3124546454213).

The spelling of 2001323223211 in words is "two trillion, one billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred eleven".