22123122321 has 8 divisors (see below), whose sum is σ = 31049996320. Its totient is φ = 13972498272.

The previous prime is 22123122313. The next prime is 22123122347. The reversal of 22123122321 is 12322132122.

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

It is not a de Polignac number, because 22123122321 - 2³ = 22123122313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22123122121) 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, 194062420 + ... + 194062533.

It is an arithmetic number, because the mean of its divisors is an integer number (3881249540).

Almost surely, 2^22123122321 is an apocalyptic number.

It is an amenable number.

22123122321 is a deficient number, since it is larger than the sum of its proper divisors (8926873999).

22123122321 is a wasteful number, since it uses less digits than its factorization.

22123122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388124975.

The product of its digits is 576, while the sum is 21.

Adding to 22123122321 its reverse (12322132122), we get a palindrome (34445254443).

The spelling of 22123122321 in words is "twenty-two billion, one hundred twenty-three million, one hundred twenty-two thousand, three hundred twenty-one".