212041305165 has 16 divisors (see below), whose sum is σ = 339501888000. Its totient is φ = 113010096192.

The previous prime is 212041305143. The next prime is 212041305173. The reversal of 212041305165 is 561503140212.

212041305165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212041305165 - 2⁹ = 212041304653 is a prime.

It is a super-3 number, since 3×212041305165³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4890190 + ... + 4933359.

It is an arithmetic number, because the mean of its divisors is an integer number (21218868000).

Almost surely, 2^212041305165 is an apocalyptic number.

It is an amenable number.

212041305165 is a deficient number, since it is larger than the sum of its proper divisors (127460582835).

212041305165 is a wasteful number, since it uses less digits than its factorization.

212041305165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9824996.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 212041305165 its reverse (561503140212), we get a palindrome (773544445377).

The spelling of 212041305165 in words is "two hundred twelve billion, forty-one million, three hundred five thousand, one hundred sixty-five".