21282707712 has 144 divisors (see below), whose sum is σ = 66314489472. Its totient is φ = 5932400640.

The previous prime is 21282707707. The next prime is 21282707723. The reversal of 21282707712 is 21770728212.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 172138 + ... + 268694.

It is an arithmetic number, because the mean of its divisors is an integer number (460517288).

Almost surely, 2^21282707712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21282707712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33157244736).

21282707712 is an abundant number, since it is smaller than the sum of its proper divisors (45031781760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21282707712 is an equidigital number, since it uses as much as digits as its factorization.

21282707712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96624 (or 96610 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 39.

The spelling of 21282707712 in words is "twenty-one billion, two hundred eighty-two million, seven hundred seven thousand, seven hundred twelve".