2102120021112 has 64 divisors (see below), whose sum is σ = 5649594739200. Its totient is φ = 649703381760.

The previous prime is 2102120021101. The next prime is 2102120021161. The reversal of 2102120021112 is 2111200212012.

It is a junction number, because it is equal to n+sod(n) for n = 2102120021091 and 2102120021100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49020189 + ... + 49063052.

It is an arithmetic number, because the mean of its divisors is an integer number (88274917800).

Almost surely, 2^{2102120021112} is an apocalyptic number.

It is an amenable number.

2102120021112 is an abundant number, since it is smaller than the sum of its proper divisors (3547474718088).

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

2102120021112 is a wasteful number, since it uses less digits than its factorization.

2102120021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98083316 (or 98083312 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2102120021112 its reverse (2111200212012), we get a palindrome (4213320233124).

The spelling of 2102120021112 in words is "two trillion, one hundred two billion, one hundred twenty million, twenty-one thousand, one hundred twelve".