21200000220112 has 20 divisors (see below), whose sum is σ = 46942857630496. Its totient is φ = 9085714380000.

The previous prime is 21200000220053. The next prime is 21200000220131. The reversal of 21200000220112 is 21102200000212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21200000220092 and 21200000220101.

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, 94642858014 + ... + 94642858237.

Almost surely, 2^{21200000220112} is an apocalyptic number.

It is an amenable number.

21200000220112 is an abundant number, since it is smaller than the sum of its proper divisors (25742857410384).

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

21200000220112 is a wasteful number, since it uses less digits than its factorization.

21200000220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189285716266 (or 189285716260 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21200000220112 its reverse (21102200000212), we get a palindrome (42302200220324).

The spelling of 21200000220112 in words is "twenty-one trillion, two hundred billion, two hundred twenty thousand, one hundred twelve".