21101002002112 has 28 divisors (see below), whose sum is σ = 41984559074656. Its totient is φ = 10522215463680.

The previous prime is 21101002002107. The next prime is 21101002002151. The reversal of 21101002002112 is 21120020010112.

It is a junction number, because it is equal to n+sod(n) for n = 21101002002092 and 21101002002101.

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, 441937464 + ... + 441985207.

Almost surely, 2^{21101002002112} is an apocalyptic number.

It is an amenable number.

21101002002112 is a deficient number, since it is larger than the sum of its proper divisors (20883557072544).

21101002002112 is an equidigital number, since it uses as much as digits as its factorization.

21101002002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883923056 (or 883923046 counting only the distinct ones).

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

Adding to 21101002002112 its reverse (21120020010112), we get a palindrome (42221022012224).

The spelling of 21101002002112 in words is "twenty-one trillion, one hundred one billion, two million, two thousand, one hundred twelve".