2021099 has 2 divisors, whose sum is σ = 2021100. Its totient is φ = 2021098.

The previous prime is 2021083. The next prime is 2021119. The reversal of 2021099 is 9901202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021099 - 2⁴ = 2021083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2021009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010549 + 1010550.

It is an arithmetic number, because the mean of its divisors is an integer number (1010550).

2^2021099 is an apocalyptic number.

2021099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021099 is an equidigital number, since it uses as much as digits as its factorization.

2021099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2021099 is about 1421.6536146333. The cubic root of 2021099 is about 126.4336073044.

The spelling of 2021099 in words is "two million, twenty-one thousand, ninety-nine".