212213313 has 12 divisors (see below), whose sum is σ = 330109780. Its totient is φ = 130592736.

The previous prime is 212213311. The next prime is 212213333. The reversal of 212213313 is 313312212.

It can be written as a sum of positive squares in 2 ways, for example, as 42614784 + 169598529 = 6528^2 + 13023^2 .

It is not a de Polignac number, because 212213313 - 2¹ = 212213311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212213311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 906778 + ... + 907011.

Almost surely, 2^212213313 is an apocalyptic number.

It is an amenable number.

212213313 is a deficient number, since it is larger than the sum of its proper divisors (117896467).

212213313 is a wasteful number, since it uses less digits than its factorization.

212213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813808 (or 1813805 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 212213313 is about 14567.5431353403. The cubic root of 212213313 is about 596.4731174534.

Adding to 212213313 its reverse (313312212), we get a palindrome (525525525).

The spelling of 212213313 in words is "two hundred twelve million, two hundred thirteen thousand, three hundred thirteen".