212225313 has 4 divisors (see below), whose sum is σ = 282967088. Its totient is φ = 141483540.

The previous prime is 212225311. The next prime is 212225317. The reversal of 212225313 is 313522212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212225313 - 2¹ = 212225311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212225313.

It is not an unprimeable number, because it can be changed into a prime (212225311) 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, 35370883 + ... + 35370888.

It is an arithmetic number, because the mean of its divisors is an integer number (70741772).

Almost surely, 2^212225313 is an apocalyptic number.

It is an amenable number.

212225313 is a deficient number, since it is larger than the sum of its proper divisors (70741775).

212225313 is an equidigital number, since it uses as much as digits as its factorization.

212225313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70741774.

The product of its digits is 720, while the sum is 21.

The square root of 212225313 is about 14567.9550040491. The cubic root of 212225313 is about 596.4843601387.

Adding to 212225313 its reverse (313522212), we get a palindrome (525747525).

The spelling of 212225313 in words is "two hundred twelve million, two hundred twenty-five thousand, three hundred thirteen".