21324214 has 8 divisors (see below), whose sum is σ = 32006880. Its totient is φ = 10655256.

The previous prime is 21324203. The next prime is 21324221. The reversal of 21324214 is 41242312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21324191 and 21324200.

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, 2547 + ... + 7009.

It is an arithmetic number, because the mean of its divisors is an integer number (4000860).

Almost surely, 2^21324214 is an apocalyptic number.

21324214 is a deficient number, since it is larger than the sum of its proper divisors (10682666).

21324214 is a wasteful number, since it uses less digits than its factorization.

21324214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6854.

The product of its digits is 384, while the sum is 19.

The square root of 21324214 is about 4617.8148512040. The cubic root of 21324214 is about 277.3049854043.

Adding to 21324214 its reverse (41242312), we get a palindrome (62566526).

The spelling of 21324214 in words is "twenty-one million, three hundred twenty-four thousand, two hundred fourteen".