221424313344 has 88 divisors (see below), whose sum is σ = 635574831360. Its totient is φ = 68130545664.

The previous prime is 221424313339. The next prime is 221424313361. The reversal of 221424313344 is 443313424122.

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

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 7 ways as a sum of consecutive naturals, for example, 2732304 + ... + 2812175.

Almost surely, 2^221424313344 is an apocalyptic number.

221424313344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221424313344 is an abundant number, since it is smaller than the sum of its proper divisors (414150518016).

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

221424313344 is a wasteful number, since it uses less digits than its factorization.

221424313344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544515 (or 5544497 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

Adding to 221424313344 its reverse (443313424122), we get a palindrome (664737737466).

The spelling of 221424313344 in words is "two hundred twenty-one billion, four hundred twenty-four million, three hundred thirteen thousand, three hundred forty-four".