221324321130 has 128 divisors (see below), whose sum is σ = 602873266176. Its totient is φ = 51514444800.

The previous prime is 221324321129. The next prime is 221324321167. The reversal of 221324321130 is 31123423122.

221324321130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221324321130.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1214034 + ... + 1384386.

It is an arithmetic number, because the mean of its divisors is an integer number (4709947392).

Almost surely, 2^221324321130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221324321130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301436633088).

221324321130 is an abundant number, since it is smaller than the sum of its proper divisors (381548945046).

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

221324321130 is a wasteful number, since it uses less digits than its factorization.

221324321130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170532.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221324321130 its reverse (31123423122), we get a palindrome (252447744252).

The spelling of 221324321130 in words is "two hundred twenty-one billion, three hundred twenty-four million, three hundred twenty-one thousand, one hundred thirty".