2212018108218 has 48 divisors (see below), whose sum is σ = 4921494415656. Its totient is φ = 717774981120.

The previous prime is 2212018108177. The next prime is 2212018108219. The reversal of 2212018108218 is 8128018102122.

2212018108218 is a `hidden beast` number, since 221 + 201 + 8 + 10 + 8 + 218 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1967435438409 + 244582669809 = 1402653^2 + 494553^2 .

It is a super-2 number, since 2×2212018108218² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2212018108219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10277971 + ... + 10490982.

Almost surely, 2^{2212018108218} is an apocalyptic number.

2212018108218 is an abundant number, since it is smaller than the sum of its proper divisors (2709476307438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2212018108218 is a wasteful number, since it uses less digits than its factorization.

2212018108218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20769119 (or 20769116 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The spelling of 2212018108218 in words is "two trillion, two hundred twelve billion, eighteen million, one hundred eight thousand, two hundred eighteen".