3300221021 has 2 divisors, whose sum is σ = 3300221022. Its totient is φ = 3300221020.

The previous prime is 3300221003. The next prime is 3300221051. The reversal of 3300221021 is 1201220033.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2595902500 + 704318521 = 50950^2 + 26539^2 .

It is a cyclic number.

It is not a de Polignac number, because 3300221021 - 2³⁰ = 2226479197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3300220987 and 3300221005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3300221051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1650110510 + 1650110511.

It is an arithmetic number, because the mean of its divisors is an integer number (1650110511).

Almost surely, 2^3300221021 is an apocalyptic number.

It is an amenable number.

3300221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3300221021 is an equidigital number, since it uses as much as digits as its factorization.

3300221021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3300221021 is about 57447.5501740501. The cubic root of 3300221021 is about 1488.8387903221.

Adding to 3300221021 its reverse (1201220033), we get a palindrome (4501441054).

The spelling of 3300221021 in words is "three billion, three hundred million, two hundred twenty-one thousand, twenty-one".