216124421611 has 8 divisors (see below), whose sum is σ = 248514673664. Its totient is φ = 184113003240.

The previous prime is 216124421599. The next prime is 216124421629. The reversal of 216124421611 is 116124421612.

216124421611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 216124421611 - 2⁹ = 216124421099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216124421671) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 94707195 + ... + 94709476.

It is an arithmetic number, because the mean of its divisors is an integer number (31064334208).

Almost surely, 2^216124421611 is an apocalyptic number.

216124421611 is a deficient number, since it is larger than the sum of its proper divisors (32390252053).

216124421611 is a wasteful number, since it uses less digits than its factorization.

216124421611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189416841.

The product of its digits is 4608, while the sum is 31.

Subtracting from 216124421611 its reverse (116124421612), we obtain a palindrome (99999999999).

The spelling of 216124421611 in words is "two hundred sixteen billion, one hundred twenty-four million, four hundred twenty-one thousand, six hundred eleven".