21002112300012 has 24 divisors (see below), whose sum is σ = 49305572438976. Its totient is φ = 6957754994448.

The previous prime is 21002112299941. The next prime is 21002112300067. The reversal of 21002112300012 is 21000321120012.

It is a junction number, because it is equal to n+sod(n) for n = 21002112299964 and 21002112300000.

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, 5368636158 + ... + 5368640069.

It is an arithmetic number, because the mean of its divisors is an integer number (2054398851624).

Almost surely, 2^{21002112300012} is an apocalyptic number.

It is an amenable number.

21002112300012 is an abundant number, since it is smaller than the sum of its proper divisors (28303460138964).

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

21002112300012 is a wasteful number, since it uses less digits than its factorization.

21002112300012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10737276397 (or 10737276395 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21002112300012 its reverse (21000321120012), we get a palindrome (42002433420024).

The spelling of 21002112300012 in words is "twenty-one trillion, two billion, one hundred twelve million, three hundred thousand, twelve".