212522513 has 8 divisors (see below), whose sum is σ = 243013632. Its totient is φ = 182064096.

The previous prime is 212522509. The next prime is 212522567. The reversal of 212522513 is 315225212.

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

It is a cyclic number.

It is not a de Polignac number, because 212522513 - 2² = 212522509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212522573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7856 + ... + 22062.

It is an arithmetic number, because the mean of its divisors is an integer number (30376704).

Almost surely, 2^212522513 is an apocalyptic number.

It is an amenable number.

212522513 is a deficient number, since it is larger than the sum of its proper divisors (30491119).

212522513 is a wasteful number, since it uses less digits than its factorization.

212522513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16351.

The product of its digits is 1200, while the sum is 23.

The square root of 212522513 is about 14578.1519061917. The cubic root of 212522513 is about 596.7626688564.

Adding to 212522513 its reverse (315225212), we get a palindrome (527747725).

The spelling of 212522513 in words is "two hundred twelve million, five hundred twenty-two thousand, five hundred thirteen".