2003331221 has 8 divisors (see below), whose sum is σ = 2130053760. Its totient is φ = 1877595328.

The previous prime is 2003331193. The next prime is 2003331229. The reversal of 2003331221 is 1221333002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2003331221 - 2⁶ = 2003331157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 2003331221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003331229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242471 + ... + 250596.

It is an arithmetic number, because the mean of its divisors is an integer number (266256720).

Almost surely, 2^2003331221 is an apocalyptic number.

It is an amenable number.

2003331221 is a deficient number, since it is larger than the sum of its proper divisors (126722539).

2003331221 is a wasteful number, since it uses less digits than its factorization.

2003331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493323.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2003331221 is about 44758.5882373428. The cubic root of 2003331221 is about 1260.6201744586.

Adding to 2003331221 its reverse (1221333002), we get a palindrome (3224664223).

The spelling of 2003331221 in words is "two billion, three million, three hundred thirty-one thousand, two hundred twenty-one".