21140243056100 has 72 divisors (see below), whose sum is σ = 52444902269760. Its totient is φ = 7245719349120.

The previous prime is 21140243056099. The next prime is 21140243056117. The reversal of 21140243056100 is 165034204112.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2776535 + ... + 7070334.

Almost surely, 2^{21140243056100} is an apocalyptic number.

21140243056100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21140243056100 is an abundant number, since it is smaller than the sum of its proper divisors (31304659213660).

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

21140243056100 is a wasteful number, since it uses less digits than its factorization.

21140243056100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849957 (or 9849950 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 21140243056100 in words is "twenty-one trillion, one hundred forty billion, two hundred forty-three million, fifty-six thousand, one hundred".