22080321 has 6 divisors (see below), whose sum is σ = 31893810. Its totient is φ = 14720208.

The previous prime is 22080301. The next prime is 22080329. The reversal of 22080321 is 12308022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21762225 + 318096 = 4665^2 + 564^2 .

It is not a de Polignac number, because 22080321 - 2⁶ = 22080257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22080294 and 22080303.

It is not an unprimeable number, because it can be changed into a prime (22080329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1226676 + ... + 1226693.

It is an arithmetic number, because the mean of its divisors is an integer number (5315635).

Almost surely, 2^22080321 is an apocalyptic number.

It is an amenable number.

22080321 is a deficient number, since it is larger than the sum of its proper divisors (9813489).

22080321 is a wasteful number, since it uses less digits than its factorization.

22080321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453375 (or 2453372 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 22080321 is about 4698.9702063324. The cubic root of 22080321 is about 280.5445228496.

Adding to 22080321 its reverse (12308022), we get a palindrome (34388343).

The spelling of 22080321 in words is "twenty-two million, eighty thousand, three hundred twenty-one".