3303303221 has 4 divisors (see below), whose sum is σ = 3303437292. Its totient is φ = 3303169152.

The previous prime is 3303303193. The next prime is 3303303233. The reversal of 3303303221 is 1223033033.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2149342321 + 1153960900 = 46361^2 + 33970^2 .

It is a cyclic number.

It is not a de Polignac number, because 3303303221 - 2¹⁴ = 3303286837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3303303193 and 3303303202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3303303821) 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, 18236 + ... + 83301.

It is an arithmetic number, because the mean of its divisors is an integer number (825859323).

Almost surely, 2^3303303221 is an apocalyptic number.

It is an amenable number.

3303303221 is a deficient number, since it is larger than the sum of its proper divisors (134071).

3303303221 is a wasteful number, since it uses less digits than its factorization.

3303303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134070.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 3303303221 is about 57474.3701226903. The cubic root of 3303303221 is about 1489.3021402058.

Adding to 3303303221 its reverse (1223033033), we get a palindrome (4526336254).

The spelling of 3303303221 in words is "three billion, three hundred three million, three hundred three thousand, two hundred twenty-one".