21112110200 has 48 divisors (see below), whose sum is σ = 50778279000. Its totient is φ = 8153640320.

The previous prime is 21112110181. The next prime is 21112110211. The reversal of 21112110200 is 201121112.

It is a super-4 number, since 4×21112110200⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1814210 + ... + 1825809.

Almost surely, 2^21112110200 is an apocalyptic number.

21112110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112110200 is an abundant number, since it is smaller than the sum of its proper divisors (29666168800).

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

21112110200 is a wasteful number, since it uses less digits than its factorization.

21112110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640064 (or 3640055 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21112110200 its reverse (201121112), we get a palindrome (21313231312).

The spelling of 21112110200 in words is "twenty-one billion, one hundred twelve million, one hundred ten thousand, two hundred".