21112020200112 has 320 divisors, whose sum is σ = 58175362252800. Its totient is φ = 6583917542400.

The previous prime is 21112020200087. The next prime is 21112020200123. The reversal of 21112020200112 is 21100202021112.

It is a junction number, because it is equal to n+sod(n) for n = 21112020200091 and 21112020200100.

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 63 ways as a sum of consecutive naturals, for example, 3073518214 + ... + 3073525082.

It is an arithmetic number, because the mean of its divisors is an integer number (181798007040).

Almost surely, 2^{21112020200112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112020200112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29087681126400).

21112020200112 is an abundant number, since it is smaller than the sum of its proper divisors (37063342052688).

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

21112020200112 is a wasteful number, since it uses less digits than its factorization.

21112020200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7336 (or 7330 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21112020200112 its reverse (21100202021112), we get a palindrome (42212222221224).

The spelling of 21112020200112 in words is "twenty-one trillion, one hundred twelve billion, twenty million, two hundred thousand, one hundred twelve".