21200002002112 has 56 divisors (see below), whose sum is σ = 42507973221120. Its totient is φ = 10489782401280.

The previous prime is 21200002002103. The next prime is 21200002002133. The reversal of 21200002002112 is 21120020000212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21200002002092 and 21200002002101.

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, 511908 + ... + 6531619.

Almost surely, 2^{21200002002112} is an apocalyptic number.

It is an amenable number.

21200002002112 is an abundant number, since it is smaller than the sum of its proper divisors (21307971219008).

21200002002112 is a wasteful number, since it uses less digits than its factorization.

21200002002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044029 (or 7044019 counting only the distinct ones).

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

Adding to 21200002002112 its reverse (21120020000212), we get a palindrome (42320022002324).

The spelling of 21200002002112 in words is "twenty-one trillion, two hundred billion, two million, two thousand, one hundred twelve".