2212506 has 24 divisors (see below), whose sum is σ = 4845204. Its totient is φ = 729600.

The previous prime is 2212487. The next prime is 2212519. The reversal of 2212506 is 6052122.

It can be written as a sum of positive squares in 2 ways, for example, as 2117025 + 95481 = 1455^2 + 309^2 .

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1210 + ... + 2426.

2^2212506 is an apocalyptic number.

2212506 is an abundant number, since it is smaller than the sum of its proper divisors (2632698).

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

2212506 is a wasteful number, since it uses less digits than its factorization.

2212506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2212506 is about 1487.4494949409. The cubic root of 2212506 is about 130.3051215566.

Adding to 2212506 its reverse (6052122), we get a palindrome (8264628).

The spelling of 2212506 in words is "two million, two hundred twelve thousand, five hundred six".