212211065615 has 16 divisors (see below), whose sum is σ = 255163093920. Its totient is φ = 169429171200.

The previous prime is 212211065597. The next prime is 212211065629. The reversal of 212211065615 is 516560112212.

212211065615 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 212211065615 - 2³⁰ = 211137323791 is a prime.

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, 10408151 + ... + 10428519.

It is an arithmetic number, because the mean of its divisors is an integer number (15947693370).

Almost surely, 2^212211065615 is an apocalyptic number.

212211065615 is a deficient number, since it is larger than the sum of its proper divisors (42952028305).

212211065615 is a wasteful number, since it uses less digits than its factorization.

212211065615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24442.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 212211065615 its reverse (516560112212), we get a palindrome (728771177827).

The spelling of 212211065615 in words is "two hundred twelve billion, two hundred eleven million, sixty-five thousand, six hundred fifteen".