221440031010330 has 64 divisors (see below), whose sum is σ = 579852634521600. Its totient is φ = 53674804768320.

The previous prime is 221440031010329. The next prime is 221440031010361. The reversal of 221440031010330 is 33010130044122.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221440031010330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45342310 + ... + 49988049.

It is an arithmetic number, because the mean of its divisors is an integer number (9060197414400).

Almost surely, 2^{221440031010330} is an apocalyptic number.

221440031010330 is an abundant number, since it is smaller than the sum of its proper divisors (358412603511270).

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

221440031010330 is a wasteful number, since it uses less digits than its factorization.

221440031010330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95337419.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221440031010330 its reverse (33010130044122), we get a palindrome (254450161054452).

The spelling of 221440031010330 in words is "two hundred twenty-one trillion, four hundred forty billion, thirty-one million, ten thousand, three hundred thirty".