21130110200 has 24 divisors (see below), whose sum is σ = 49127506680. Its totient is φ = 8452044000.

The previous prime is 21130110191. The next prime is 21130110233. The reversal of 21130110200 is 201103112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52825076 + ... + 52825475.

It is an arithmetic number, because the mean of its divisors is an integer number (2046979445).

Almost surely, 2^21130110200 is an apocalyptic number.

21130110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21130110200 is an abundant number, since it is smaller than the sum of its proper divisors (27997396480).

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

21130110200 is a wasteful number, since it uses less digits than its factorization.

21130110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105650567 (or 105650558 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21130110200 its reverse (201103112), we get a palindrome (21331213312).

The spelling of 21130110200 in words is "twenty-one billion, one hundred thirty million, one hundred ten thousand, two hundred".