222224333221 has 4 divisors (see below), whose sum is σ = 242426545344. Its totient is φ = 202022121100.

The previous prime is 222224333143. The next prime is 222224333273. The reversal of 222224333221 is 122333422222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222224333221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222224333221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222224333321) 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, 10101106045 + ... + 10101106066.

It is an arithmetic number, because the mean of its divisors is an integer number (60606636336).

Almost surely, 2^222224333221 is an apocalyptic number.

It is an amenable number.

222224333221 is a deficient number, since it is larger than the sum of its proper divisors (20202212123).

222224333221 is a wasteful number, since it uses less digits than its factorization.

222224333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20202212122.

The product of its digits is 13824, while the sum is 28.

Adding to 222224333221 its reverse (122333422222), we get a palindrome (344557755443).

The spelling of 222224333221 in words is "two hundred twenty-two billion, two hundred twenty-four million, three hundred thirty-three thousand, two hundred twenty-one".