212105116065 has 8 divisors (see below), whose sum is σ = 339368185728. Its totient is φ = 113122728560.

The previous prime is 212105116043. The next prime is 212105116099. The reversal of 212105116065 is 560611501212.

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

It is not a de Polignac number, because 212105116065 - 2⁶ = 212105116001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7070170521 + ... + 7070170550.

It is an arithmetic number, because the mean of its divisors is an integer number (42421023216).

Almost surely, 2^212105116065 is an apocalyptic number.

It is an amenable number.

212105116065 is a deficient number, since it is larger than the sum of its proper divisors (127263069663).

212105116065 is a wasteful number, since it uses less digits than its factorization.

212105116065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14140341079.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 212105116065 its reverse (560611501212), we get a palindrome (772716617277).

The spelling of 212105116065 in words is "two hundred twelve billion, one hundred five million, one hundred sixteen thousand, sixty-five".