221443033344 has 72 divisors (see below), whose sum is σ = 634696927872. Its totient is φ = 68136314880.

The previous prime is 221443033337. The next prime is 221443033369. The reversal of 221443033344 is 443330344122.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11079912 + ... + 11099879.

Almost surely, 2^221443033344 is an apocalyptic number.

221443033344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221443033344 is an abundant number, since it is smaller than the sum of its proper divisors (413253894528).

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

221443033344 is a wasteful number, since it uses less digits than its factorization.

221443033344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22179823 (or 22179809 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 221443033344 its reverse (443330344122), we get a palindrome (664773377466).

The spelling of 221443033344 in words is "two hundred twenty-one billion, four hundred forty-three million, thirty-three thousand, three hundred forty-four".