212001365165 has 8 divisors (see below), whose sum is σ = 262608142848. Its totient is φ = 164130089040.

The previous prime is 212001365137. The next prime is 212001365171. The reversal of 212001365165 is 561563100212.

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

It is not a de Polignac number, because 212001365165 - 2¹⁸ = 212001103021 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 in 7 ways as a sum of consecutive naturals, for example, 683875217 + ... + 683875526.

It is an arithmetic number, because the mean of its divisors is an integer number (32826017856).

Almost surely, 2^212001365165 is an apocalyptic number.

It is an amenable number.

212001365165 is a deficient number, since it is larger than the sum of its proper divisors (50606777683).

212001365165 is a wasteful number, since it uses less digits than its factorization.

212001365165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367750779.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 212001365165 its reverse (561563100212), we get a palindrome (773564465377).

The spelling of 212001365165 in words is "two hundred twelve billion, one million, three hundred sixty-five thousand, one hundred sixty-five".