2001213303 has 4 divisors (see below), whose sum is σ = 2668284408. Its totient is φ = 1334142200.

The previous prime is 2001213301. The next prime is 2001213337. The reversal of 2001213303 is 3033121002.

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 2001213303 - 2¹ = 2001213301 is a prime.

It is a super-3 number, since 3×2001213303³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001213301) 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, 333535548 + ... + 333535553.

It is an arithmetic number, because the mean of its divisors is an integer number (667071102).

Almost surely, 2^2001213303 is an apocalyptic number.

2001213303 is a deficient number, since it is larger than the sum of its proper divisors (667071105).

2001213303 is an equidigital number, since it uses as much as digits as its factorization.

2001213303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667071104.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 2001213303 is about 44734.9226332180. The cubic root of 2001213303 is about 1260.1757760567.

Adding to 2001213303 its reverse (3033121002), we get a palindrome (5034334305).

The spelling of 2001213303 in words is "two billion, one million, two hundred thirteen thousand, three hundred three".