221133321330 has 16 divisors (see below), whose sum is σ = 530719971264. Its totient is φ = 58968885680.

The previous prime is 221133321307. The next prime is 221133321337. The reversal of 221133321330 is 33123331122.

It is a self number, because there is not a number n which added to its sum of digits gives 221133321330.

It is not an unprimeable number, because it can be changed into a prime (221133321337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685555326 + ... + 3685555385.

It is an arithmetic number, because the mean of its divisors is an integer number (33169998204).

Almost surely, 2^221133321330 is an apocalyptic number.

221133321330 is an abundant number, since it is smaller than the sum of its proper divisors (309586649934).

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

221133321330 is a wasteful number, since it uses less digits than its factorization.

221133321330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371110721.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 221133321330 its reverse (33123331122), we get a palindrome (254256652452).

The spelling of 221133321330 in words is "two hundred twenty-one billion, one hundred thirty-three million, three hundred twenty-one thousand, three hundred thirty".