216044011 has 4 divisors (see below), whose sum is σ = 219003592. Its totient is φ = 213084432.

The previous prime is 216044009. The next prime is 216044027. The reversal of 216044011 is 110440612.

216044011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216044011 - 2¹ = 216044009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216044011.

It is not an unprimeable number, because it can be changed into a prime (216044071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1479681 + ... + 1479826.

It is an arithmetic number, because the mean of its divisors is an integer number (54750898).

Almost surely, 2^216044011 is an apocalyptic number.

216044011 is a deficient number, since it is larger than the sum of its proper divisors (2959581).

216044011 is an equidigital number, since it uses as much as digits as its factorization.

216044011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959580.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 216044011 is about 14698.4356650631. The cubic root of 216044011 is about 600.0407481585.

Adding to 216044011 its reverse (110440612), we get a palindrome (326484623).

The spelling of 216044011 in words is "two hundred sixteen million, forty-four thousand, eleven".