212822814868 has 6 divisors (see below), whose sum is σ = 372439926026. Its totient is φ = 106411407432.

The previous prime is 212822814823. The next prime is 212822814961. The reversal of 212822814868 is 868418228212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107543331844 + 105279483024 = 327938^2 + 324468^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26602851855 + ... + 26602851862.

Almost surely, 2^212822814868 is an apocalyptic number.

It is an amenable number.

212822814868 is a deficient number, since it is larger than the sum of its proper divisors (159617111158).

212822814868 is a wasteful number, since it uses less digits than its factorization.

212822814868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53205703721 (or 53205703719 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 52.

The spelling of 212822814868 in words is "two hundred twelve billion, eight hundred twenty-two million, eight hundred fourteen thousand, eight hundred sixty-eight".