21113432340324 has 12 divisors (see below), whose sum is σ = 49264675460784. Its totient is φ = 7037810780104.

The previous prime is 21113432340283. The next prime is 21113432340347. The reversal of 21113432340324 is 42304323431112.

It is a tau number, because it is divible by the number of its divisors (12).

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, 879726347502 + ... + 879726347525.

It is an arithmetic number, because the mean of its divisors is an integer number (4105389621732).

Almost surely, 2^{21113432340324} is an apocalyptic number.

It is an amenable number.

21113432340324 is an abundant number, since it is smaller than the sum of its proper divisors (28151243120460).

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

21113432340324 is a wasteful number, since it uses less digits than its factorization.

21113432340324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759452695034 (or 1759452695032 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 21113432340324 its reverse (42304323431112), we get a palindrome (63417755771436).

The spelling of 21113432340324 in words is "twenty-one trillion, one hundred thirteen billion, four hundred thirty-two million, three hundred forty thousand, three hundred twenty-four".