22026321 has 6 divisors (see below), whose sum is σ = 31815810. Its totient is φ = 14684208.

The previous prime is 22026313. The next prime is 22026331. The reversal of 22026321 is 12362022.

It can be written as a sum of positive squares in only one way, i.e., 17766225 + 4260096 = 4215^2 + 2064^2 .

It is not a de Polignac number, because 22026321 - 2³ = 22026313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22026294 and 22026303.

It is not an unprimeable number, because it can be changed into a prime (22026331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1223676 + ... + 1223693.

It is an arithmetic number, because the mean of its divisors is an integer number (5302635).

Almost surely, 2^22026321 is an apocalyptic number.

It is an amenable number.

22026321 is a deficient number, since it is larger than the sum of its proper divisors (9789489).

22026321 is a wasteful number, since it uses less digits than its factorization.

22026321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447375 (or 2447372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22026321 is about 4693.2207491231. The cubic root of 22026321 is about 280.3156347080.

Adding to 22026321 its reverse (12362022), we get a palindrome (34388343).

The spelling of 22026321 in words is "twenty-two million, twenty-six thousand, three hundred twenty-one".