221234313344 has 64 divisors (see below), whose sum is σ = 483464479680. Its totient is φ = 100005350400.

The previous prime is 221234313341. The next prime is 221234313371. The reversal of 221234313344 is 443313432122.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 221234313344.

It is not an unprimeable number, because it can be changed into a prime (221234313341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179204 + ... + 688899.

It is an arithmetic number, because the mean of its divisors is an integer number (7554132495).

Almost surely, 2^221234313344 is an apocalyptic number.

It is an amenable number.

221234313344 is an abundant number, since it is smaller than the sum of its proper divisors (262230166336).

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

221234313344 is a wasteful number, since it uses less digits than its factorization.

221234313344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868309 (or 868297 counting only the distinct ones).

The product of its digits is 41472, while the sum is 32.

Adding to 221234313344 its reverse (443313432122), we get a palindrome (664547745466).

The spelling of 221234313344 in words is "two hundred twenty-one billion, two hundred thirty-four million, three hundred thirteen thousand, three hundred forty-four".