2121010110012 has 48 divisors (see below), whose sum is σ = 4985753472000. Its totient is φ = 701775645120.

The previous prime is 2121010109989. The next prime is 2121010110049. The reversal of 2121010110012 is 2100110101212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2121010110012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337512 + ... + 2087087.

It is an arithmetic number, because the mean of its divisors is an integer number (103869864000).

Almost surely, 2^{2121010110012} is an apocalyptic number.

It is an amenable number.

2121010110012 is an abundant number, since it is smaller than the sum of its proper divisors (2864743361988).

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

2121010110012 is a wasteful number, since it uses less digits than its factorization.

2121010110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425146 (or 2425144 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2121010110012 its reverse (2100110101212), we get a palindrome (4221120211224).

The spelling of 2121010110012 in words is "two trillion, one hundred twenty-one billion, ten million, one hundred ten thousand, twelve".