221324340330 has 128 divisors (see below), whose sum is σ = 600476405760. Its totient is φ = 57997477440.

The previous prime is 221324340323. The next prime is 221324340337. The reversal of 221324340330 is 33043423122.

221324340330 is a `hidden beast` number, since 2 + 2 + 1 + 324 + 3 + 4 + 0 + 330 = 666.

It is an interprime number because it is at equal distance from previous prime (221324340323) and next prime (221324340337).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 221324340294 and 221324340303.

It is not an unprimeable number, because it can be changed into a prime (221324340337) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5866387 + ... + 5903993.

It is an arithmetic number, because the mean of its divisors is an integer number (4691221920).

Almost surely, 2^221324340330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221324340330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300238202880).

221324340330 is an abundant number, since it is smaller than the sum of its proper divisors (379152065430).

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

221324340330 is a wasteful number, since it uses less digits than its factorization.

221324340330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38001 (or 37995 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 221324340330 its reverse (33043423122), we get a palindrome (254367763452).

The spelling of 221324340330 in words is "two hundred twenty-one billion, three hundred twenty-four million, three hundred forty thousand, three hundred thirty".