21112666330424 has 16 divisors (see below), whose sum is σ = 39586325566200. Its totient is φ = 10556312846112.

The previous prime is 21112666330391. The next prime is 21112666330451. The reversal of 21112666330424 is 42403366621112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2453582 + ... + 6945890.

Almost surely, 2^{21112666330424} is an apocalyptic number.

It is an amenable number.

21112666330424 is a deficient number, since it is larger than the sum of its proper divisors (18473659235776).

21112666330424 is a wasteful number, since it uses less digits than its factorization.

21112666330424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079782 (or 5079778 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 21112666330424 in words is "twenty-one trillion, one hundred twelve billion, six hundred sixty-six million, three hundred thirty thousand, four hundred twenty-four".