7122222222217 has 16 divisors (see below), whose sum is σ = 7144756733520. Its totient is φ = 7099733991168.

The previous prime is 7122222222209. The next prime is 7122222222251.

7122222222217 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 1396830879376 + 5725391342841 = 1181876^2 + 2392779^2 .

It is a cyclic number.

It is not a de Polignac number, because 7122222222217 - 2³ = 7122222222209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7122222228217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1875747963 + ... + 1875751759.

It is an arithmetic number, because the mean of its divisors is an integer number (446547295845).

Almost surely, 2^{7122222222217} is an apocalyptic number.

It is an amenable number.

7122222222217 is a deficient number, since it is larger than the sum of its proper divisors (22534511303).

7122222222217 is a wasteful number, since it uses less digits than its factorization.

7122222222217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460.

The product of its digits is 25088, while the sum is 34.

The spelling of 7122222222217 in words is "seven trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred seventeen".