22321321 has 8 divisors (see below), whose sum is σ = 24810624. Its totient is φ = 19908720.

The previous prime is 22321319. The next prime is 22321331. The reversal of 22321321 is 12312322.

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 22321321 - 2¹ = 22321319 is a prime.

It is a super-3 number, since 3×22321321³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22321295 and 22321304.

It is not an unprimeable number, because it can be changed into a prime (22321331) 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 7 ways as a sum of consecutive naturals, for example, 18561 + ... + 19726.

It is an arithmetic number, because the mean of its divisors is an integer number (3101328).

Almost surely, 2^22321321 is an apocalyptic number.

It is an amenable number.

22321321 is a deficient number, since it is larger than the sum of its proper divisors (2489303).

22321321 is a wasteful number, since it uses less digits than its factorization.

22321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38351.

The product of its digits is 144, while the sum is 16.

The square root of 22321321 is about 4724.5445283117. The cubic root of 22321321 is about 281.5615178090.

Adding to 22321321 its reverse (12312322), we get a palindrome (34633643).

It can be divided in two parts, 2232 and 1321, that added together give a palindrome (3553).

The spelling of 22321321 in words is "twenty-two million, three hundred twenty-one thousand, three hundred twenty-one".