21616211364124 has 12 divisors (see below), whose sum is σ = 40738244494024. Its totient is φ = 9976712937264.

The previous prime is 21616211364113. The next prime is 21616211364151. The reversal of 21616211364124 is 42146311261612.

It is a congruent number.

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, 207848186142 + ... + 207848186245.

Almost surely, 2^{21616211364124} is an apocalyptic number.

It is an amenable number.

21616211364124 is a deficient number, since it is larger than the sum of its proper divisors (19122033129900).

21616211364124 is a wasteful number, since it uses less digits than its factorization.

21616211364124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415696372404 (or 415696372402 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The spelling of 21616211364124 in words is "twenty-one trillion, six hundred sixteen billion, two hundred eleven million, three hundred sixty-four thousand, one hundred twenty-four".