216221115116 has 6 divisors (see below), whose sum is σ = 378386951460. Its totient is φ = 108110557556.

The previous prime is 216221115101. The next prime is 216221115137. The reversal of 216221115116 is 611511122612.

216221115116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 as a sum of consecutive naturals, namely, 27027639386 + ... + 27027639393.

It is an arithmetic number, because the mean of its divisors is an integer number (63064491910).

Almost surely, 2^216221115116 is an apocalyptic number.

It is an amenable number.

216221115116 is a deficient number, since it is larger than the sum of its proper divisors (162165836344).

216221115116 is a wasteful number, since it uses less digits than its factorization.

216221115116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54055278783 (or 54055278781 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

Adding to 216221115116 its reverse (611511122612), we get a palindrome (827732237728).

The spelling of 216221115116 in words is "two hundred sixteen billion, two hundred twenty-one million, one hundred fifteen thousand, one hundred sixteen".