212165224115 has 16 divisors (see below), whose sum is σ = 276609156768. Its totient is φ = 155289340416.

The previous prime is 212165224091. The next prime is 212165224121. The reversal of 212165224115 is 511422561212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212165224115 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 14435489 + ... + 14450178.

It is an arithmetic number, because the mean of its divisors is an integer number (17288072298).

Almost surely, 2^212165224115 is an apocalyptic number.

212165224115 is a deficient number, since it is larger than the sum of its proper divisors (64443932653).

212165224115 is a wasteful number, since it uses less digits than its factorization.

212165224115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28885798.

The product of its digits is 9600, while the sum is 32.

Adding to 212165224115 its reverse (511422561212), we get a palindrome (723587785327).

The spelling of 212165224115 in words is "two hundred twelve billion, one hundred sixty-five million, two hundred twenty-four thousand, one hundred fifteen".