2221444 has 6 divisors (see below), whose sum is σ = 3887534. Its totient is φ = 1110720.

The previous prime is 2221433. The next prime is 2221447. The reversal of 2221444 is 4441222.

2221444 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1658944 + 562500 = 1288^2 + 750^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2221447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277677 + ... + 277684.

2^2221444 is an apocalyptic number.

It is an amenable number.

2221444 is a deficient number, since it is larger than the sum of its proper divisors (1666090).

2221444 is a wasteful number, since it uses less digits than its factorization.

2221444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555365 (or 555363 counting only the distinct ones).

The product of its digits is 512, while the sum is 19.

The square root of 2221444 is about 1490.4509384747. The cubic root of 2221444 is about 130.4803530754.

Adding to 2221444 its reverse (4441222), we get a palindrome (6662666).

The spelling of 2221444 in words is "two million, two hundred twenty-one thousand, four hundred forty-four".