2212813 has 4 divisors (see below), whose sum is σ = 2217568. Its totient is φ = 2208060.

The previous prime is 2212783. The next prime is 2212817. The reversal of 2212813 is 3182122.

2212813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 2212813 - 2⁵ = 2212781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593 + ... + 2638.

It is an arithmetic number, because the mean of its divisors is an integer number (554392).

2^2212813 is an apocalyptic number.

It is an amenable number.

2212813 is a deficient number, since it is larger than the sum of its proper divisors (4755).

2212813 is an equidigital number, since it uses as much as digits as its factorization.

2212813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754.

The product of its digits is 192, while the sum is 19.

The square root of 2212813 is about 1487.5526881425. The cubic root of 2212813 is about 130.3111481801.

Adding to 2212813 its reverse (3182122), we get a palindrome (5394935).

It can be divided in two parts, 2212 and 813, that multiplied together give a triangular number (1798356 = T₁₈₉₆).

The spelling of 2212813 in words is "two million, two hundred twelve thousand, eight hundred thirteen".