21320010444232 has 16 divisors (see below), whose sum is σ = 40018049757900. Its totient is φ = 10648530508800.

The previous prime is 21320010444203. The next prime is 21320010444263. The reversal of 21320010444232 is 23244401002312.

It can be written as a sum of positive squares in 2 ways, for example, as 19934742647556 + 1385267796676 = 4464834^2 + 1176974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21320010444232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434331269 + ... + 1434346132.

Almost surely, 2^{21320010444232} is an apocalyptic number.

It is an amenable number.

21320010444232 is a deficient number, since it is larger than the sum of its proper divisors (18698039313668).

21320010444232 is a wasteful number, since it uses less digits than its factorization.

21320010444232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868678336 (or 2868678332 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21320010444232 its reverse (23244401002312), we get a palindrome (44564411446544).

The spelling of 21320010444232 in words is "twenty-one trillion, three hundred twenty billion, ten million, four hundred forty-four thousand, two hundred thirty-two".