2122686 has 20 divisors (see below), whose sum is σ = 4756752. Its totient is φ = 707508.

The previous prime is 2122667. The next prime is 2122691. The reversal of 2122686 is 6862212.

2122686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam 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 9 ways as a sum of consecutive naturals, for example, 6390 + ... + 6713.

2^2122686 is an apocalyptic number.

2122686 is an abundant number, since it is smaller than the sum of its proper divisors (2634066).

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

2122686 is a wasteful number, since it uses less digits than its factorization.

2122686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13117 (or 13108 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2122686 is about 1456.9440620696. The cubic root of 2122686 is about 128.5173963437.

Adding to 2122686 its reverse (6862212), we get a palindrome (8984898).

It can be divided in two parts, 21226 and 86, that added together give a palindrome (21312).

The spelling of 2122686 in words is "two million, one hundred twenty-two thousand, six hundred eighty-six".