3300100021 has 2 divisors, whose sum is σ = 3300100022. Its totient is φ = 3300100020.

The previous prime is 3300100019. The next prime is 3300100043. The reversal of 3300100021 is 1200010033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2571909796 + 728190225 = 50714^2 + 26985^2 .

It is an emirp because it is prime and its reverse (1200010033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3300100021 - 2¹ = 3300100019 is a prime.

Together with 3300100019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3300099980 and 3300100007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3300100081) 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 as a sum of consecutive naturals, namely, 1650050010 + 1650050011.

It is an arithmetic number, because the mean of its divisors is an integer number (1650050011).

Almost surely, 2^3300100021 is an apocalyptic number.

It is an amenable number.

3300100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3300100021 is an equidigital number, since it uses as much as digits as its factorization.

3300100021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 3300100021 is about 57446.4970298451. The cubic root of 3300100021 is about 1488.8205943999.

Adding to 3300100021 its reverse (1200010033), we get a palindrome (4500110054).

The spelling of 3300100021 in words is "three billion, three hundred million, one hundred thousand, twenty-one".