2221799 has 4 divisors (see below), whose sum is σ = 2225736. Its totient is φ = 2217864.

The previous prime is 2221789. The next prime is 2221829. The reversal of 2221799 is 9971222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221799 - 2²⁰ = 1173223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (556434).

2^2221799 is an apocalyptic number.

2221799 is a deficient number, since it is larger than the sum of its proper divisors (3937).

2221799 is an equidigital number, since it uses as much as digits as its factorization.

2221799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936.

The product of its digits is 4536, while the sum is 32.

The square root of 2221799 is about 1490.5700251917. The cubic root of 2221799 is about 130.4873032181.

The spelling of 2221799 in words is "two million, two hundred twenty-one thousand, seven hundred ninety-nine".