212518680321 has 8 divisors (see below), whose sum is σ = 283366163680. Its totient is φ = 141675158592.

The previous prime is 212518680317. The next prime is 212518680347. The reversal of 212518680321 is 123086815212.

212518680321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212518680321 - 2² = 212518680317 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 212518680321.

It is not an unprimeable number, because it can be changed into a prime (212518680371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862891 + ... + 1081488.

It is an arithmetic number, because the mean of its divisors is an integer number (35420770460).

Almost surely, 2^212518680321 is an apocalyptic number.

It is an amenable number.

212518680321 is a deficient number, since it is larger than the sum of its proper divisors (70847483359).

212518680321 is a wasteful number, since it uses less digits than its factorization.

212518680321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980815.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 212518680321 in words is "two hundred twelve billion, five hundred eighteen million, six hundred eighty thousand, three hundred twenty-one".