2221224324440 has 64 divisors (see below), whose sum is σ = 5528886232320. Its totient is φ = 796341616000.

The previous prime is 2221224324437. The next prime is 2221224324457. The reversal of 2221224324440 is 444234221222.

It is a junction number, because it is equal to n+sod(n) for n = 2221224324397 and 2221224324406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35519726 + ... + 35582205.

It is an arithmetic number, because the mean of its divisors is an integer number (86388847380).

Almost surely, 2^{2221224324440} is an apocalyptic number.

2221224324440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221224324440 is an abundant number, since it is smaller than the sum of its proper divisors (3307661907880).

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

2221224324440 is a wasteful number, since it uses less digits than its factorization.

2221224324440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71102024 (or 71102020 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 2221224324440 its reverse (444234221222), we get a palindrome (2665458545662).

The spelling of 2221224324440 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-four million, three hundred twenty-four thousand, four hundred forty".