2001223 has 16 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 1584000.

The previous prime is 2001211. The next prime is 2001229. The reversal of 2001223 is 3221002.

It is a cyclic number.

It is not a de Polignac number, because 2001223 - 2⁵ = 2001191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7848 + ... + 8098.

It is an arithmetic number, because the mean of its divisors is an integer number (154224).

2^2001223 is an apocalyptic number.

2001223 is a deficient number, since it is larger than the sum of its proper divisors (466361).

2001223 is a wasteful number, since it uses less digits than its factorization.

2001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2001223 is about 1414.6458920875. The cubic root of 2001223 is about 126.0177811473.

Adding to 2001223 its reverse (3221002), we get a palindrome (5222225).

The spelling of 2001223 in words is "two million, one thousand, two hundred twenty-three".