221104230424 has 64 divisors (see below), whose sum is σ = 517269254400. Its totient is φ = 86077468800.

The previous prime is 221104230397. The next prime is 221104230427. The reversal of 221104230424 is 424032401122.

221104230424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221104230424² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221104230427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656242 + ... + 934270.

It is an arithmetic number, because the mean of its divisors is an integer number (8082332100).

Almost surely, 2^221104230424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221104230424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258634627200).

221104230424 is an abundant number, since it is smaller than the sum of its proper divisors (296165023976).

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

221104230424 is a wasteful number, since it uses less digits than its factorization.

221104230424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279344 (or 279340 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 221104230424 its reverse (424032401122), we get a palindrome (645136631546).

The spelling of 221104230424 in words is "two hundred twenty-one billion, one hundred four million, two hundred thirty thousand, four hundred twenty-four".