3321109621 has 2 divisors, whose sum is σ = 3321109622. Its totient is φ = 3321109620.

The previous prime is 3321109591. The next prime is 3321109657. The reversal of 3321109621 is 1269011233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2575055025 + 746054596 = 50745^2 + 27314^2 .

It is a cyclic number.

It is not a de Polignac number, because 3321109621 - 2¹³ = 3321101429 is a prime.

It is a super-2 number, since 2×3321109621² = 22059538229397527282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3321109621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3321109021) 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, 1660554810 + 1660554811.

It is an arithmetic number, because the mean of its divisors is an integer number (1660554811).

Almost surely, 2^3321109621 is an apocalyptic number.

It is an amenable number.

3321109621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3321109621 is an equidigital number, since it uses as much as digits as its factorization.

3321109621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 3321109621 is about 57629.0692359334. The cubic root of 3321109621 is about 1491.9733655194.

The spelling of 3321109621 in words is "three billion, three hundred twenty-one million, one hundred nine thousand, six hundred twenty-one".