212521713 has 8 divisors (see below), whose sum is σ = 284611488. Its totient is φ = 141056544.

The previous prime is 212521703. The next prime is 212521741. The reversal of 212521713 is 317125212.

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

It is not a de Polignac number, because 212521713 - 2⁶ = 212521649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212521703) 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, 155356 + ... + 156717.

It is an arithmetic number, because the mean of its divisors is an integer number (35576436).

Almost surely, 2^212521713 is an apocalyptic number.

It is an amenable number.

212521713 is a deficient number, since it is larger than the sum of its proper divisors (72089775).

212521713 is a wasteful number, since it uses less digits than its factorization.

212521713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312303.

The product of its digits is 840, while the sum is 24.

The square root of 212521713 is about 14578.1244678456. The cubic root of 212521713 is about 596.7619200562.

Adding to 212521713 its reverse (317125212), we get a palindrome (529646925).

The spelling of 212521713 in words is "two hundred twelve million, five hundred twenty-one thousand, seven hundred thirteen".