2224444221 has 8 divisors (see below), whose sum is σ = 3295472960. Its totient is φ = 1482962796.

The previous prime is 2224444213. The next prime is 2224444231. The reversal of 2224444221 is 1224444222.

It is not a de Polignac number, because 2224444221 - 2³ = 2224444213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 82386823 = 2224444221 / (2 + 2 + 2 + 4 + 4 + 4 + 4 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2224444231) 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, 41193385 + ... + 41193438.

It is an arithmetic number, because the mean of its divisors is an integer number (411934120).

Almost surely, 2^2224444221 is an apocalyptic number.

It is an amenable number.

2224444221 is a deficient number, since it is larger than the sum of its proper divisors (1071028739).

2224444221 is an equidigital number, since it uses as much as digits as its factorization.

2224444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82386832 (or 82386826 counting only the distinct ones).

The product of its digits is 8192, while the sum is 27.

The square root of 2224444221 is about 47164.0140467285. The cubic root of 2224444221 is about 1305.3906770598.

Adding to 2224444221 its reverse (1224444222), we get a palindrome (3448888443).

Subtracting from 2224444221 its reverse (1224444222), we obtain a palindrome (999999999).

The spelling of 2224444221 in words is "two billion, two hundred twenty-four million, four hundred forty-four thousand, two hundred twenty-one".