21324322 has 8 divisors (see below), whose sum is σ = 32424876. Its totient is φ = 10516032.

The previous prime is 21324313. The next prime is 21324361. The reversal of 21324322 is 22342312.

It can be written as a sum of positive squares in 2 ways, for example, as 21261321 + 63001 = 4611^2 + 251^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21324322.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72883 + ... + 73174.

Almost surely, 2^21324322 is an apocalyptic number.

21324322 is a deficient number, since it is larger than the sum of its proper divisors (11100554).

21324322 is a wasteful number, since it uses less digits than its factorization.

21324322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146132.

The product of its digits is 576, while the sum is 19.

The square root of 21324322 is about 4617.8265450318. The cubic root of 21324322 is about 277.3054535558.

Adding to 21324322 its reverse (22342312), we get a palindrome (43666634).

The spelling of 21324322 in words is "twenty-one million, three hundred twenty-four thousand, three hundred twenty-two".