2212855 has 4 divisors (see below), whose sum is σ = 2655432. Its totient is φ = 1770280.

The previous prime is 2212831. The next prime is 2212871. The reversal of 2212855 is 5582122.

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

It is not a de Polignac number, because 2212855 - 2¹³ = 2204663 is a prime.

It is a Duffinian number.

2212855 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221281 + ... + 221290.

It is an arithmetic number, because the mean of its divisors is an integer number (663858).

2^2212855 is an apocalyptic number.

2212855 is a deficient number, since it is larger than the sum of its proper divisors (442577).

2212855 is an equidigital number, since it uses as much as digits as its factorization.

2212855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442576.

The product of its digits is 1600, while the sum is 25.

The square root of 2212855 is about 1487.5668052225. The cubic root of 2212855 is about 130.3119726260.

Adding to 2212855 its reverse (5582122), we get a palindrome (7794977).

The spelling of 2212855 in words is "two million, two hundred twelve thousand, eight hundred fifty-five".