2121112015 has 32 divisors (see below), whose sum is σ = 2944180224. Its totient is φ = 1449853440.

The previous prime is 2121112013. The next prime is 2121112027. The reversal of 2121112015 is 5102111212.

It is not a de Polignac number, because 2121112015 - 2¹ = 2121112013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121112015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121112013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1015302 + ... + 1017388.

It is an arithmetic number, because the mean of its divisors is an integer number (92005632).

Almost surely, 2^2121112015 is an apocalyptic number.

2121112015 is a deficient number, since it is larger than the sum of its proper divisors (823068209).

2121112015 is a wasteful number, since it uses less digits than its factorization.

2121112015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 2121112015 is about 46055.5318610045. The cubic root of 2121112015 is about 1284.8562300355.

Adding to 2121112015 its reverse (5102111212), we get a palindrome (7223223227).

The spelling of 2121112015 in words is "two billion, one hundred twenty-one million, one hundred twelve thousand, fifteen".