22112321 has 8 divisors (see below), whose sum is σ = 27568704. Its totient is φ = 17230320.

The previous prime is 22112309. The next prime is 22112323. The reversal of 22112321 is 12321122.

It is a happy number.

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 22112321 - 2¹⁸ = 21850177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112296 and 22112305.

It is not an unprimeable number, because it can be changed into a prime (22112323) 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, 143510 + ... + 143663.

It is an arithmetic number, because the mean of its divisors is an integer number (3446088).

Almost surely, 2^22112321 is an apocalyptic number.

It is an amenable number.

22112321 is a deficient number, since it is larger than the sum of its proper divisors (5456383).

22112321 is a wasteful number, since it uses less digits than its factorization.

22112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287191.

The product of its digits is 48, while the sum is 14.

The square root of 22112321 is about 4702.3739749195. The cubic root of 22112321 is about 280.6799842161.

Adding to 22112321 its reverse (12321122), we get a palindrome (34433443).

The spelling of 22112321 in words is "twenty-two million, one hundred twelve thousand, three hundred twenty-one".