2122685 has 4 divisors (see below), whose sum is σ = 2547228. Its totient is φ = 1698144.

The previous prime is 2122667. The next prime is 2122691. The reversal of 2122685 is 5862212.

2122685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1413721 + 708964 = 1189^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122685 - 2¹⁰ = 2121661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212264 + ... + 212273.

It is an arithmetic number, because the mean of its divisors is an integer number (636807).

2^2122685 is an apocalyptic number.

It is an amenable number.

2122685 is a deficient number, since it is larger than the sum of its proper divisors (424543).

2122685 is an equidigital number, since it uses as much as digits as its factorization.

2122685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424542.

The product of its digits is 1920, while the sum is 26.

The square root of 2122685 is about 1456.9437188855. The cubic root of 2122685 is about 128.5173761621.

Adding to 2122685 its reverse (5862212), we get a palindrome (7984897).

The spelling of 2122685 in words is "two million, one hundred twenty-two thousand, six hundred eighty-five".