11716021 has 8 divisors (see below), whose sum is σ = 11988000. Its totient is φ = 11446032.

The previous prime is 11716007. The next prime is 11716063. The reversal of 11716021 is 12061711.

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

It is a cyclic number.

It is not a de Polignac number, because 11716021 - 2¹⁵ = 11683253 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 11716021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11716091) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23230 + ... + 23728.

It is an arithmetic number, because the mean of its divisors is an integer number (1498500).

Almost surely, 2^11716021 is an apocalyptic number.

It is an amenable number.

11716021 is a deficient number, since it is larger than the sum of its proper divisors (271979).

11716021 is an equidigital number, since it uses as much as digits as its factorization.

11716021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 11716021 is about 3422.8673652363. The cubic root of 11716021 is about 227.1224410122.

Adding to 11716021 its reverse (12061711), we get a palindrome (23777732).

The spelling of 11716021 in words is "eleven million, seven hundred sixteen thousand, twenty-one".