2244221 has 8 divisors (see below), whose sum is σ = 2715840. Its totient is φ = 1810368.

The previous prime is 2244211. The next prime is 2244227. The reversal of 2244221 is 1224422.

It is a happy number.

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

It is not a de Polignac number, because 2244221 - 2⁶ = 2244157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2244221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2244227) 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 7 ways as a sum of consecutive naturals, for example, 9311 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (339480).

2^2244221 is an apocalyptic number.

It is an amenable number.

2244221 is a deficient number, since it is larger than the sum of its proper divisors (471619).

2244221 is a wasteful number, since it uses less digits than its factorization.

2244221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18883.

The product of its digits is 256, while the sum is 17.

The square root of 2244221 is about 1498.0724281556. The cubic root of 2244221 is about 130.9247863798.

Adding to 2244221 its reverse (1224422), we get a palindrome (3468643).

The spelling of 2244221 in words is "two million, two hundred forty-four thousand, two hundred twenty-one".