221331221330 has 16 divisors (see below), whose sum is σ = 400621878720. Its totient is φ = 88037892912.

The previous prime is 221331221323. The next prime is 221331221341. The reversal of 221331221330 is 33122133122.

221331221330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221331221296 and 221331221305.

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 7 ways as a sum of consecutive naturals, for example, 61822574 + ... + 61826153.

It is an arithmetic number, because the mean of its divisors is an integer number (25038867420).

Almost surely, 2^221331221330 is an apocalyptic number.

221331221330 is a deficient number, since it is larger than the sum of its proper divisors (179290657390).

221331221330 is a wasteful number, since it uses less digits than its factorization.

221331221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123648913.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 221331221330 its reverse (33122133122), we get a palindrome (254453354452).

The spelling of 221331221330 in words is "two hundred twenty-one billion, three hundred thirty-one million, two hundred twenty-one thousand, three hundred thirty".