221224322 has 8 divisors (see below), whose sum is σ = 362003472. Its totient is φ = 100556500.

The previous prime is 221224321. The next prime is 221224337. The reversal of 221224322 is 223422122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221224294 and 221224303.

It is not an unprimeable number, because it can be changed into a prime (221224321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027804 + ... + 5027847.

It is an arithmetic number, because the mean of its divisors is an integer number (45250434).

Almost surely, 2^221224322 is an apocalyptic number.

221224322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221224322 is a deficient number, since it is larger than the sum of its proper divisors (140779150).

221224322 is a wasteful number, since it uses less digits than its factorization.

221224322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055664.

The product of its digits is 768, while the sum is 20.

The square root of 221224322 is about 14873.6115990703. The cubic root of 221224322 is about 604.7988512367.

Adding to 221224322 its reverse (223422122), we get a palindrome (444646444).

The spelling of 221224322 in words is "two hundred twenty-one million, two hundred twenty-four thousand, three hundred twenty-two".