2122287 has 4 divisors (see below), whose sum is σ = 2829720. Its totient is φ = 1414856.

The previous prime is 2122277. The next prime is 2122303. The reversal of 2122287 is 7822212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2122287 - 2⁸ = 2122031 is a prime.

It is a super-2 number, since 2×2122287² = 9008204220738, which contains 22 as substring.

It is a D-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, 353712 + ... + 353717.

It is an arithmetic number, because the mean of its divisors is an integer number (707430).

2^2122287 is an apocalyptic number.

2122287 is a deficient number, since it is larger than the sum of its proper divisors (707433).

2122287 is an equidigital number, since it uses as much as digits as its factorization.

2122287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707432.

The product of its digits is 896, while the sum is 24.

The square root of 2122287 is about 1456.8071251885. The cubic root of 2122287 is about 128.5093433934.

Adding to 2122287 its reverse (7822212), we get a palindrome (9944499).

The spelling of 2122287 in words is "two million, one hundred twenty-two thousand, two hundred eighty-seven".