3356321021 has 2 divisors, whose sum is σ = 3356321022. Its totient is φ = 3356321020.

The previous prime is 3356321009. The next prime is 3356321057. The reversal of 3356321021 is 1201236533.

3356321021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3163500025 + 192820996 = 56245^2 + 13886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3356321021 is a prime.

It is a super-3 number, since 3×3356321021³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3356321081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1678160510 + 1678160511.

It is an arithmetic number, because the mean of its divisors is an integer number (1678160511).

Almost surely, 2^3356321021 is an apocalyptic number.

It is an amenable number.

3356321021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3356321021 is an equidigital number, since it uses as much as digits as its factorization.

3356321021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 3356321021 is about 57933.7640845129. The cubic root of 3356321021 is about 1497.2276229591.

Adding to 3356321021 its reverse (1201236533), we get a palindrome (4557557554).

The spelling of 3356321021 in words is "three billion, three hundred fifty-six million, three hundred twenty-one thousand, twenty-one".