2122271 has 4 divisors (see below), whose sum is σ = 2125200. Its totient is φ = 2119344.

The previous prime is 2122259. The next prime is 2122277. The reversal of 2122271 is 1722212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2122271 - 2¹⁸ = 1860127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515 + ... + 2123.

It is an arithmetic number, because the mean of its divisors is an integer number (531300).

2^2122271 is an apocalyptic number.

2122271 is a deficient number, since it is larger than the sum of its proper divisors (2929).

2122271 is a wasteful number, since it uses less digits than its factorization.

2122271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928.

The product of its digits is 112, while the sum is 17.

The square root of 2122271 is about 1456.8016337168. The cubic root of 2122271 is about 128.5090204471.

Adding to 2122271 its reverse (1722212), we get a palindrome (3844483).

The spelling of 2122271 in words is "two million, one hundred twenty-two thousand, two hundred seventy-one".