221233530430 has 32 divisors (see below), whose sum is σ = 434443201920. Its totient is φ = 80444668320.

The previous prime is 221233530421. The next prime is 221233530451. The reversal of 221233530430 is 34035332122.

221233530430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 3251701 + ... + 3319039.

It is an arithmetic number, because the mean of its divisors is an integer number (13576350060).

Almost surely, 2^221233530430 is an apocalyptic number.

221233530430 is a deficient number, since it is larger than the sum of its proper divisors (213209671490).

221233530430 is a wasteful number, since it uses less digits than its factorization.

221233530430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97224.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 221233530430 its reverse (34035332122), we get a palindrome (255268862552).

It can be divided in two parts, 22123 and 3530430, that added together give a palindrome (3552553).

The spelling of 221233530430 in words is "two hundred twenty-one billion, two hundred thirty-three million, five hundred thirty thousand, four hundred thirty".