22224212321 has 8 divisors (see below), whose sum is σ = 23525230080. Its totient is φ = 20958838992.

The previous prime is 22224212317. The next prime is 22224212347. The reversal of 22224212321 is 12321242222.

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

It is a cyclic number.

It is not a de Polignac number, because 22224212321 - 2² = 22224212317 is a prime.

It is a super-2 number, since 2×22224212321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22224242321) 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, 8909825 + ... + 8912318.

It is an arithmetic number, because the mean of its divisors is an integer number (2940653760).

Almost surely, 2^22224212321 is an apocalyptic number.

It is an amenable number.

22224212321 is a deficient number, since it is larger than the sum of its proper divisors (1301017759).

22224212321 is a wasteful number, since it uses less digits than its factorization.

22224212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17822215.

The product of its digits is 1536, while the sum is 23.

Adding to 22224212321 its reverse (12321242222), we get a palindrome (34545454543).

The spelling of 22224212321 in words is "twenty-two billion, two hundred twenty-four million, two hundred twelve thousand, three hundred twenty-one".