212275520717 has 4 divisors (see below), whose sum is σ = 228604406940. Its totient is φ = 195946634496.

The previous prime is 212275520707. The next prime is 212275520749. The reversal of 212275520717 is 717025572212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36830983396 + 175444537321 = 191914^2 + 418861^2 .

It is a cyclic number.

It is not a de Polignac number, because 212275520717 - 2³⁴ = 195095651533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212275520707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8164443092 + ... + 8164443117.

It is an arithmetic number, because the mean of its divisors is an integer number (57151101735).

Almost surely, 2^212275520717 is an apocalyptic number.

It is an amenable number.

212275520717 is a deficient number, since it is larger than the sum of its proper divisors (16328886223).

212275520717 is a wasteful number, since it uses less digits than its factorization.

212275520717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16328886222.

The product of its (nonzero) digits is 137200, while the sum is 41.

The spelling of 212275520717 in words is "two hundred twelve billion, two hundred seventy-five million, five hundred twenty thousand, seven hundred seventeen".