2221440324 has 12 divisors (see below), whose sum is σ = 5183360784. Its totient is φ = 740480104.

The previous prime is 2221440323. The next prime is 2221440367. The reversal of 2221440324 is 4230441222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2221440324² = 9869594226186449952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221440294 and 2221440303.

It is not an unprimeable number, because it can be changed into a prime (2221440323) 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 3 ways as a sum of consecutive naturals, for example, 92560002 + ... + 92560025.

It is an arithmetic number, because the mean of its divisors is an integer number (431946732).

Almost surely, 2^2221440324 is an apocalyptic number.

It is an amenable number.

2221440324 is an abundant number, since it is smaller than the sum of its proper divisors (2961920460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221440324 is a wasteful number, since it uses less digits than its factorization.

2221440324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185120034 (or 185120032 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2221440324 is about 47132.1580664412. The cubic root of 2221440324 is about 1304.8028110331.

Adding to 2221440324 its reverse (4230441222), we get a palindrome (6451881546).

The spelling of 2221440324 in words is "two billion, two hundred twenty-one million, four hundred forty thousand, three hundred twenty-four".