21343022 has 8 divisors (see below), whose sum is σ = 32092200. Its totient is φ = 10645624.

The previous prime is 21343019. The next prime is 21343039. The reversal of 21343022 is 22034312.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11897 + ... + 13572.

It is an arithmetic number, because the mean of its divisors is an integer number (4011525).

Almost surely, 2^21343022 is an apocalyptic number.

21343022 is a deficient number, since it is larger than the sum of its proper divisors (10749178).

21343022 is a wasteful number, since it uses less digits than its factorization.

21343022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25890.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 21343022 is about 4619.8508633938. The cubic root of 21343022 is about 277.3864893000.

Adding to 21343022 its reverse (22034312), we get a palindrome (43377334).

The spelling of 21343022 in words is "twenty-one million, three hundred forty-three thousand, twenty-two".