212505213 has 8 divisors (see below), whose sum is σ = 283720576. Its totient is φ = 141480000.

The previous prime is 212505203. The next prime is 212505233. The reversal of 212505213 is 312505212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212505213 - 2⁹ = 212504701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212505213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212505203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44908 + ... + 49413.

It is an arithmetic number, because the mean of its divisors is an integer number (35465072).

Almost surely, 2^212505213 is an apocalyptic number.

It is an amenable number.

212505213 is a deficient number, since it is larger than the sum of its proper divisors (71215363).

212505213 is an equidigital number, since it uses as much as digits as its factorization.

212505213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95075.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 212505213 is about 14577.5585404415. The cubic root of 212505213 is about 596.7464756319.

Subtracting 212505213 from its reverse (312505212), we obtain a palindrome (99999999).

The spelling of 212505213 in words is "two hundred twelve million, five hundred five thousand, two hundred thirteen".