2021213339 has 2 divisors, whose sum is σ = 2021213340. Its totient is φ = 2021213338.

The previous prime is 2021213309. The next prime is 2021213357. The reversal of 2021213339 is 9333121202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021213339 - 2⁸ = 2021213083 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2021213309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010606669 + 1010606670.

It is an arithmetic number, because the mean of its divisors is an integer number (1010606670).

Almost surely, 2^2021213339 is an apocalyptic number.

2021213339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021213339 is an equidigital number, since it uses as much as digits as its factorization.

2021213339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 2021213339 is about 44957.9063013393. The cubic root of 2021213339 is about 1264.3599148905.

The spelling of 2021213339 in words is "two billion, twenty-one million, two hundred thirteen thousand, three hundred thirty-nine".