2001223303 has 4 divisors (see below), whose sum is σ = 2001638520. Its totient is φ = 2000808088.

The previous prime is 2001223297. The next prime is 2001223351. The reversal of 2001223303 is 3033221002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001223303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001223363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200293 + ... + 210046.

It is an arithmetic number, because the mean of its divisors is an integer number (500409630).

Almost surely, 2^2001223303 is an apocalyptic number.

2001223303 is a deficient number, since it is larger than the sum of its proper divisors (415217).

2001223303 is an equidigital number, since it uses as much as digits as its factorization.

2001223303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415216.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 2001223303 is about 44735.0344025798. The cubic root of 2001223303 is about 1260.1778750728.

Adding to 2001223303 its reverse (3033221002), we get a palindrome (5034444305).

The spelling of 2001223303 in words is "two billion, one million, two hundred twenty-three thousand, three hundred three".