2221424444 has 24 divisors (see below), whose sum is σ = 4191910800. Its totient is φ = 1026587520.

The previous prime is 2221424431. The next prime is 2221424453. The reversal of 2221424444 is 4444241222.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353339 + ... + 359570.

It is an arithmetic number, because the mean of its divisors is an integer number (174662950).

Almost surely, 2^2221424444 is an apocalyptic number.

It is an amenable number.

2221424444 is a deficient number, since it is larger than the sum of its proper divisors (1970486356).

2221424444 is a wasteful number, since it uses less digits than its factorization.

2221424444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712973 (or 712971 counting only the distinct ones).

The product of its digits is 16384, while the sum is 29.

The square root of 2221424444 is about 47131.9896036652. The cubic root of 2221424444 is about 1304.7997018914.

Adding to 2221424444 its reverse (4444241222), we get a palindrome (6665665666).

The spelling of 2221424444 in words is "two billion, two hundred twenty-one million, four hundred twenty-four thousand, four hundred forty-four".