2216031217 has 8 divisors (see below), whose sum is σ = 2236765824. Its totient is φ = 2195388048.

The previous prime is 2216031157. The next prime is 2216031229. The reversal of 2216031217 is 7121306122.

It is a happy number.

2216031217 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 2216031217 - 2²³ = 2207642609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2216031191 and 2216031200.

It is not an unprimeable number, because it can be changed into a prime (2216031287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26328 + ... + 71590.

It is an arithmetic number, because the mean of its divisors is an integer number (279595728).

Almost surely, 2^2216031217 is an apocalyptic number.

It is an amenable number.

2216031217 is a deficient number, since it is larger than the sum of its proper divisors (20734607).

2216031217 is a wasteful number, since it uses less digits than its factorization.

2216031217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45719.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2216031217 is about 47074.7407534019. The cubic root of 2216031217 is about 1303.7429049602.

Adding to 2216031217 its reverse (7121306122), we get a palindrome (9337337339).

The spelling of 2216031217 in words is "two billion, two hundred sixteen million, thirty-one thousand, two hundred seventeen".