221244442432 has 56 divisors (see below), whose sum is σ = 493360350336. Its totient is φ = 97673123328.

The previous prime is 221244442429. The next prime is 221244442483. The reversal of 221244442432 is 234244442122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5761708 + ... + 5799979.

It is an arithmetic number, because the mean of its divisors is an integer number (8810006256).

Almost surely, 2^221244442432 is an apocalyptic number.

It is an amenable number.

221244442432 is an abundant number, since it is smaller than the sum of its proper divisors (272115907904).

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

221244442432 is a wasteful number, since it uses less digits than its factorization.

221244442432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561735 (or 11561725 counting only the distinct ones).

The product of its digits is 98304, while the sum is 34.

Adding to 221244442432 its reverse (234244442122), we get a palindrome (455488884554).

The spelling of 221244442432 in words is "two hundred twenty-one billion, two hundred forty-four million, four hundred forty-two thousand, four hundred thirty-two".