2021339 has 2 divisors, whose sum is σ = 2021340. Its totient is φ = 2021338.

The previous prime is 2021333. The next prime is 2021377. The reversal of 2021339 is 9331202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021339 - 2⁸ = 2021083 is a prime.

It is a super-2 number, since 2×2021339² = 8171622705842, 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 2021339.

It is not a weakly prime, because it can be changed into another prime (2021333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010669 + 1010670.

It is an arithmetic number, because the mean of its divisors is an integer number (1010670).

2^2021339 is an apocalyptic number.

2021339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021339 is an equidigital number, since it uses as much as digits as its factorization.

2021339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2021339 is about 1421.7380208745. The cubic root of 2021339 is about 126.4386116551.

The spelling of 2021339 in words is "two million, twenty-one thousand, three hundred thirty-nine".