7216710217 has 4 divisors (see below), whose sum is σ = 7243340416. Its totient is φ = 7190080020.

The previous prime is 7216710203. The next prime is 7216710223. The reversal of 7216710217 is 7120176127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7120176127 = 311 ⋅22894457.

It is a cyclic number.

It is not a de Polignac number, because 7216710217 - 2¹⁹ = 7216185929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7216710227) 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, 13314693 + ... + 13315234.

It is an arithmetic number, because the mean of its divisors is an integer number (1810835104).

Almost surely, 2^7216710217 is an apocalyptic number.

It is an amenable number.

7216710217 is a deficient number, since it is larger than the sum of its proper divisors (26630199).

7216710217 is a wasteful number, since it uses less digits than its factorization.

7216710217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26630198.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 7216710217 is about 84951.2225750754. Note that the first 3 decimals coincide. The cubic root of 7216710217 is about 1932.4714610585.

The spelling of 7216710217 in words is "seven billion, two hundred sixteen million, seven hundred ten thousand, two hundred seventeen".