22324421 has 8 divisors (see below), whose sum is σ = 26623104. Its totient is φ = 18303120.

The previous prime is 22324409. The next prime is 22324481. The reversal of 22324421 is 12442322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22324421 is a prime.

It is a super-3 number, since 3×22324421³ (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 = 22324393 and 22324402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22324481) 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, 69170 + ... + 69491.

It is an arithmetic number, because the mean of its divisors is an integer number (3327888).

Almost surely, 2^22324421 is an apocalyptic number.

It is an amenable number.

22324421 is a deficient number, since it is larger than the sum of its proper divisors (4298683).

22324421 is a wasteful number, since it uses less digits than its factorization.

22324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138691.

The product of its digits is 768, while the sum is 20.

The square root of 22324421 is about 4724.8725908748. The cubic root of 22324421 is about 281.5745516897.

Adding to 22324421 its reverse (12442322), we get a palindrome (34766743).

The spelling of 22324421 in words is "twenty-two million, three hundred twenty-four thousand, four hundred twenty-one".