2221165 has 8 divisors (see below), whose sum is σ = 2727648. Its totient is φ = 1735440.

The previous prime is 2221159. The next prime is 2221183. The reversal of 2221165 is 5611222.

2221165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221165 - 2⁹ = 2220653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4951 + ... + 5380.

It is an arithmetic number, because the mean of its divisors is an integer number (340956).

2^2221165 is an apocalyptic number.

It is an amenable number.

2221165 is a deficient number, since it is larger than the sum of its proper divisors (506483).

2221165 is a wasteful number, since it uses less digits than its factorization.

2221165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10379.

The product of its digits is 240, while the sum is 19.

The square root of 2221165 is about 1490.3573397008. The cubic root of 2221165 is about 130.4748903310.

Adding to 2221165 its reverse (5611222), we get a palindrome (7832387).

The spelling of 2221165 in words is "two million, two hundred twenty-one thousand, one hundred sixty-five".