22443120321 has 8 divisors (see below), whose sum is σ = 31499116320. Its totient is φ = 14174602272.

The previous prime is 22443120317. The next prime is 22443120347. The reversal of 22443120321 is 12302134422.

It is a happy number.

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

It is not a de Polignac number, because 22443120321 - 2² = 22443120317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22443120291 and 22443120300.

It is not an unprimeable number, because it can be changed into a prime (22443120311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196869420 + ... + 196869533.

It is an arithmetic number, because the mean of its divisors is an integer number (3937389540).

Almost surely, 2^22443120321 is an apocalyptic number.

It is an amenable number.

22443120321 is a deficient number, since it is larger than the sum of its proper divisors (9055995999).

22443120321 is a wasteful number, since it uses less digits than its factorization.

22443120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393738975.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 22443120321 its reverse (12302134422), we get a palindrome (34745254743).

The spelling of 22443120321 in words is "twenty-two billion, four hundred forty-three million, one hundred twenty thousand, three hundred twenty-one".