2122666 has 32 divisors (see below), whose sum is σ = 3991680. Its totient is φ = 824256.

The previous prime is 2122657. The next prime is 2122667. The reversal of 2122666 is 6662212.

It is a self number, because there is not a number n which added to its sum of digits gives 2122666.

It is not an unprimeable number, because it can be changed into a prime (2122667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19420 + ... + 19528.

It is an arithmetic number, because the mean of its divisors is an integer number (124740).

2^2122666 is an apocalyptic number.

2122666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2122666 is a deficient number, since it is larger than the sum of its proper divisors (1869014).

2122666 is a wasteful number, since it uses less digits than its factorization.

2122666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238.

The product of its digits is 1728, while the sum is 25.

The square root of 2122666 is about 1456.9371983720. The cubic root of 2122666 is about 128.5169927111.

Adding to 2122666 its reverse (6662212), we get a palindrome (8784878).

The spelling of 2122666 in words is "two million, one hundred twenty-two thousand, six hundred sixty-six".