3344660021 has 2 divisors, whose sum is σ = 3344660022. Its totient is φ = 3344660020.

The previous prime is 3344660017. The next prime is 3344660057. The reversal of 3344660021 is 1200664433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1873937521 + 1470722500 = 43289^2 + 38350^2 .

It is an emirp because it is prime and its reverse (1200664433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3344660021 - 2² = 3344660017 is a prime.

It is a super-2 number, since 2×3344660021² = 22373501312151440882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3344660521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672330010 + 1672330011.

It is an arithmetic number, because the mean of its divisors is an integer number (1672330011).

Almost surely, 2^3344660021 is an apocalyptic number.

It is an amenable number.

3344660021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3344660021 is an equidigital number, since it uses as much as digits as its factorization.

3344660021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 3344660021 is about 57833.0357235378. The cubic root of 3344660021 is about 1495.4916517355.

The spelling of 3344660021 in words is "three billion, three hundred forty-four million, six hundred sixty thousand, twenty-one".