21121200200112 has 40 divisors (see below), whose sum is σ = 54563869467120. Its totient is φ = 7040300847360.

The previous prime is 21121200200083. The next prime is 21121200200123. The reversal of 21121200200112 is 21100200212112.

It is a super-2 number, since 2×21121200200112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121200200091 and 21121200200100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381162 + ... + 6510582.

It is an arithmetic number, because the mean of its divisors is an integer number (1364096736678).

Almost surely, 2^{21121200200112} is an apocalyptic number.

It is an amenable number.

21121200200112 is an abundant number, since it is smaller than the sum of its proper divisors (33442669267008).

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

21121200200112 is a wasteful number, since it uses less digits than its factorization.

21121200200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201221 (or 6201215 counting only the distinct ones).

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

Adding to 21121200200112 its reverse (21100200212112), we get a palindrome (42221400412224).

The spelling of 21121200200112 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred million, two hundred thousand, one hundred twelve".