2121103012 has 24 divisors (see below), whose sum is σ = 4259969280. Its totient is φ = 905237760.

The previous prime is 2121103001. The next prime is 2121103021. The reversal of 2121103012 is 2103011212.

It is a junction number, because it is equal to n+sod(n) for n = 2121102983 and 2121103001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151789 + ... + 165172.

It is an arithmetic number, because the mean of its divisors is an integer number (177498720).

Almost surely, 2^2121103012 is an apocalyptic number.

It is an amenable number.

2121103012 is an abundant number, since it is smaller than the sum of its proper divisors (2138866268).

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

2121103012 is a wasteful number, since it uses less digits than its factorization.

2121103012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317211 (or 317209 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2121103012 is about 46055.4341201991. The cubic root of 2121103012 is about 1284.8544121876.

Adding to 2121103012 its reverse (2103011212), we get a palindrome (4224114224).

The spelling of 2121103012 in words is "two billion, one hundred twenty-one million, one hundred three thousand, twelve".