212160765109 has 4 divisors (see below), whose sum is σ = 213346020960. Its totient is φ = 210975509260.

The previous prime is 212160765053. The next prime is 212160765163. The reversal of 212160765109 is 901567061212.

212160765109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212160765109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212160765199) 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 3 ways as a sum of consecutive naturals, for example, 592627657 + ... + 592628014.

It is an arithmetic number, because the mean of its divisors is an integer number (53336505240).

Almost surely, 2^212160765109 is an apocalyptic number.

It is an amenable number.

212160765109 is a deficient number, since it is larger than the sum of its proper divisors (1185255851).

212160765109 is a wasteful number, since it uses less digits than its factorization.

212160765109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185255850.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 212160765109 in words is "two hundred twelve billion, one hundred sixty million, seven hundred sixty-five thousand, one hundred nine".