2221843 has 6 divisors (see below), whose sum is σ = 2406084. Its totient is φ = 2050776.

The previous prime is 2221837. The next prime is 2221847. The reversal of 2221843 is 3481222.

2221843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221843 - 2¹⁷ = 2090771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6405 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (401014).

2^2221843 is an apocalyptic number.

2221843 is a deficient number, since it is larger than the sum of its proper divisors (184241).

2221843 is a wasteful number, since it uses less digits than its factorization.

2221843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13173 (or 13160 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 2221843 is about 1490.5847845728. The cubic root of 2221843 is about 130.4881645926.

The spelling of 2221843 in words is "two million, two hundred twenty-one thousand, eight hundred forty-three".