221224110440 has 16 divisors (see below), whose sum is σ = 497754248580. Its totient is φ = 88489644160.

The previous prime is 221224110413. The next prime is 221224110461. The reversal of 221224110440 is 44011422122.

It can be written as a sum of positive squares in 2 ways, for example, as 193728501316 + 27495609124 = 440146^2 + 165818^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2765301341 + ... + 2765301420.

Almost surely, 2^221224110440 is an apocalyptic number.

221224110440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221224110440 is an abundant number, since it is smaller than the sum of its proper divisors (276530138140).

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

221224110440 is a wasteful number, since it uses less digits than its factorization.

221224110440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530602772 (or 5530602768 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221224110440 its reverse (44011422122), we get a palindrome (265235532562).

The spelling of 221224110440 in words is "two hundred twenty-one billion, two hundred twenty-four million, one hundred ten thousand, four hundred forty".