21716603300231 has 12 divisors (see below), whose sum is σ = 25262251084080. Its totient is φ = 18614172528000.

The previous prime is 21716603300131. The next prime is 21716603300443. The reversal of 21716603300231 is 13200330661712.

It is not a de Polignac number, because 21716603300231 - 2¹⁸ = 21716603038087 is a prime.

It is a super-2 number, since 2×21716603300231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21716603300191 and 21716603300200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21716603300131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23145815 + ... + 24065783.

It is an arithmetic number, because the mean of its divisors is an integer number (2105187590340).

Almost surely, 2^{21716603300231} is an apocalyptic number.

21716603300231 is a deficient number, since it is larger than the sum of its proper divisors (3545647783849).

21716603300231 is an equidigital number, since it uses as much as digits as its factorization.

21716603300231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401734 (or 1401727 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

Adding to 21716603300231 its reverse (13200330661712), we get a palindrome (34916933961943).

The spelling of 21716603300231 in words is "twenty-one trillion, seven hundred sixteen billion, six hundred three million, three hundred thousand, two hundred thirty-one".