21712716223 has 8 divisors (see below), whose sum is σ = 24133517136. Its totient is φ = 19366401600.

The previous prime is 21712716199. The next prime is 21712716229. The reversal of 21712716223 is 32261721712.

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 21712716223 - 2⁵ = 21712716191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21712716229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18620958 + ... + 18622123.

It is an arithmetic number, because the mean of its divisors is an integer number (3016689642).

Almost surely, 2^21712716223 is an apocalyptic number.

21712716223 is a deficient number, since it is larger than the sum of its proper divisors (2420800913).

21712716223 is a wasteful number, since it uses less digits than its factorization.

21712716223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37243145.

The product of its digits is 14112, while the sum is 34.

The spelling of 21712716223 in words is "twenty-one billion, seven hundred twelve million, seven hundred sixteen thousand, two hundred twenty-three".