21332422 has 8 divisors (see below), whose sum is σ = 32041656. Its totient is φ = 10651872.

The previous prime is 21332419. The next prime is 21332471. The reversal of 21332422 is 22423312.

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 21332422.

It is a congruent number.

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, 5203 + ... + 8350.

It is an arithmetic number, because the mean of its divisors is an integer number (4005207).

Almost surely, 2^21332422 is an apocalyptic number.

21332422 is a deficient number, since it is larger than the sum of its proper divisors (10709234).

21332422 is a wasteful number, since it uses less digits than its factorization.

21332422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14342.

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

The square root of 21332422 is about 4618.7034977361. The cubic root of 21332422 is about 277.3405604138.

Adding to 21332422 its reverse (22423312), we get a palindrome (43755734).

The spelling of 21332422 in words is "twenty-one million, three hundred thirty-two thousand, four hundred twenty-two".