2221441 has 8 divisors (see below), whose sum is σ = 2370600. Its totient is φ = 2074368.

The previous prime is 2221433. The next prime is 2221447. The reversal of 2221441 is 1441222.

It can be written as a sum of positive squares in 4 ways, for example, as 531441 + 1690000 = 729^2 + 1300^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2221441 - 2³ = 2221433 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 2095 + ... + 2971.

It is an arithmetic number, because the mean of its divisors is an integer number (296325).

2^2221441 is an apocalyptic number.

It is an amenable number.

2221441 is a deficient number, since it is larger than the sum of its proper divisors (149159).

2221441 is a wasteful number, since it uses less digits than its factorization.

2221441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043.

The product of its digits is 128, while the sum is 16.

The square root of 2221441 is about 1490.4499320675. The cubic root of 2221441 is about 130.4802943387.

Adding to 2221441 its reverse (1441222), we get a palindrome (3662663).

It can be divided in two parts, 2221 and 441, that added together give a palindrome (2662).

The spelling of 2221441 in words is "two million, two hundred twenty-one thousand, four hundred forty-one".