21200011200112 has 20 divisors (see below), whose sum is σ = 41498475535216. Its totient is φ = 10490727191040.

The previous prime is 21200011200019. The next prime is 21200011200113. The reversal of 21200011200112 is 21100211000212.

It is a junction number, because it is equal to n+sod(n) for n = 21200011200092 and 21200011200101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200011200113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6829898964 + ... + 6829902067.

Almost surely, 2^{21200011200112} is an apocalyptic number.

It is an amenable number.

21200011200112 is a deficient number, since it is larger than the sum of its proper divisors (20298464335104).

21200011200112 is a wasteful number, since it uses less digits than its factorization.

21200011200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13659801136 (or 13659801130 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21200011200112 its reverse (21100211000212), we get a palindrome (42300222200324).

The spelling of 21200011200112 in words is "twenty-one trillion, two hundred billion, eleven million, two hundred thousand, one hundred twelve".