21214713 has 8 divisors (see below), whose sum is σ = 30462208. Its totient is φ = 13055184.

The previous prime is 21214703. The next prime is 21214741. The reversal of 21214713 is 31741212.

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

It is not a de Polignac number, because 21214713 - 2⁶ = 21214649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21214713.

It is not an unprimeable number, because it can be changed into a prime (21214703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271945 + ... + 272022.

It is an arithmetic number, because the mean of its divisors is an integer number (3807776).

Almost surely, 2^21214713 is an apocalyptic number.

It is an amenable number.

21214713 is a deficient number, since it is larger than the sum of its proper divisors (9247495).

21214713 is a wasteful number, since it uses less digits than its factorization.

21214713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543983.

The product of its digits is 336, while the sum is 21.

The square root of 21214713 is about 4605.9432258768. The cubic root of 21214713 is about 276.8295118792.

Adding to 21214713 its reverse (31741212), we get a palindrome (52955925).

The spelling of 21214713 in words is "twenty-one million, two hundred fourteen thousand, seven hundred thirteen".