2112705 has 48 divisors (see below), whose sum is σ = 4417920. Its totient is φ = 912384.

The previous prime is 2112703. The next prime is 2112707. The reversal of 2112705 is 5072112.

It is an interprime number because it is at equal distance from previous prime (2112703) and next prime (2112707).

It is not a de Polignac number, because 2112705 - 2¹ = 2112703 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2112703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5809 + ... + 6161.

It is an arithmetic number, because the mean of its divisors is an integer number (92040).

2^2112705 is an apocalyptic number.

It is an amenable number.

2112705 is an abundant number, since it is smaller than the sum of its proper divisors (2305215).

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

2112705 is a wasteful number, since it uses less digits than its factorization.

2112705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 2112705 is about 1453.5147058080. The cubic root of 2112705 is about 128.3156475694.

Adding to 2112705 its reverse (5072112), we get a palindrome (7184817).

It can be divided in two parts, 211 and 2705, that added together give a square (2916 = 54²).

The spelling of 2112705 in words is "two million, one hundred twelve thousand, seven hundred five".