212043212867 has 4 divisors (see below), whose sum is σ = 212571999336. Its totient is φ = 211514426400.

The previous prime is 212043212813. The next prime is 212043212869. The reversal of 212043212867 is 768212340212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212043212867 - 2¹⁰ = 212043211843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212043212867.

It is not an unprimeable number, because it can be changed into a prime (212043212869) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 264392633 + ... + 264393434.

It is an arithmetic number, because the mean of its divisors is an integer number (53142999834).

Almost surely, 2^212043212867 is an apocalyptic number.

212043212867 is a deficient number, since it is larger than the sum of its proper divisors (528786469).

212043212867 is an equidigital number, since it uses as much as digits as its factorization.

212043212867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528786468.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 212043212867 in words is "two hundred twelve billion, forty-three million, two hundred twelve thousand, eight hundred sixty-seven".