2212505 has 4 divisors (see below), whose sum is σ = 2655012. Its totient is φ = 1770000.

The previous prime is 2212487. The next prime is 2212519. The reversal of 2212505 is 5052122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1054729 + 1157776 = 1027^2 + 1076^2 .

It is not a de Polignac number, because 2212505 - 2¹⁰ = 2211481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221246 + ... + 221255.

It is an arithmetic number, because the mean of its divisors is an integer number (663753).

2^2212505 is an apocalyptic number.

It is an amenable number.

2212505 is a deficient number, since it is larger than the sum of its proper divisors (442507).

2212505 is an equidigital number, since it uses as much as digits as its factorization.

2212505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442506.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2212505 is about 1487.4491587950. The cubic root of 2212505 is about 130.3051019250.

Adding to 2212505 its reverse (5052122), we get a palindrome (7264627).

The spelling of 2212505 in words is "two million, two hundred twelve thousand, five hundred five".