2018220217 has 8 divisors (see below), whose sum is σ = 2186485056. Its totient is φ = 1851814992.

The previous prime is 2018220209. The next prime is 2018220251. The reversal of 2018220217 is 7120228102.

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 2018220217 - 2³ = 2018220209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2018220191 and 2018220200.

It is not an unprimeable number, because it can be changed into a prime (2018220277) 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, 462643 + ... + 466984.

It is an arithmetic number, because the mean of its divisors is an integer number (273310632).

Almost surely, 2^2018220217 is an apocalyptic number.

It is an amenable number.

2018220217 is a deficient number, since it is larger than the sum of its proper divisors (168264839).

2018220217 is a wasteful number, since it uses less digits than its factorization.

2018220217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929807.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 2018220217 is about 44924.6059192510. The cubic root of 2018220217 is about 1263.7354957223.

Adding to 2018220217 its reverse (7120228102), we get a palindrome (9138448319).

The spelling of 2018220217 in words is "two billion, eighteen million, two hundred twenty thousand, two hundred seventeen".