221331223230 has 32 divisors (see below), whose sum is σ = 572056085664. Its totient is φ = 54481531776.

The previous prime is 221331223219. The next prime is 221331223237. The reversal of 221331223230 is 32322133122.

It is a self number, because there is not a number n which added to its sum of digits gives 221331223230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331223237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283757589 + ... + 283758368.

It is an arithmetic number, because the mean of its divisors is an integer number (17876752677).

Almost surely, 2^221331223230 is an apocalyptic number.

221331223230 is an abundant number, since it is smaller than the sum of its proper divisors (350724862434).

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

221331223230 is a wasteful number, since it uses less digits than its factorization.

221331223230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567515980.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 221331223230 its reverse (32322133122), we get a palindrome (253653356352).

The spelling of 221331223230 in words is "two hundred twenty-one billion, three hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty".