2105605212 has 24 divisors (see below), whose sum is σ = 4914064512. Its totient is φ = 701727600.

The previous prime is 2105605199. The next prime is 2105605223. The reversal of 2105605212 is 2125065012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57537 + ... + 86727.

It is an arithmetic number, because the mean of its divisors is an integer number (204752688).

Almost surely, 2^2105605212 is an apocalyptic number.

It is an amenable number.

2105605212 is an abundant number, since it is smaller than the sum of its proper divisors (2808459300).

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

2105605212 is a wasteful number, since it uses less digits than its factorization.

2105605212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35209 (or 35207 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2105605212 is about 45886.8740709149. The cubic root of 2105605212 is about 1281.7175048043.

The spelling of 2105605212 in words is "two billion, one hundred five million, six hundred five thousand, two hundred twelve".