2212181814 has 128 divisors (see below), whose sum is σ = 5077416960. Its totient is φ = 638668800.

The previous prime is 2212181801. The next prime is 2212181833. The reversal of 2212181814 is 4181812122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10484169 + ... + 10484379.

It is an arithmetic number, because the mean of its divisors is an integer number (39667320).

Almost surely, 2^2212181814 is an apocalyptic number.

2212181814 is an abundant number, since it is smaller than the sum of its proper divisors (2865235146).

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

2212181814 is a wasteful number, since it uses less digits than its factorization.

2212181814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406.

The product of its digits is 2048, while the sum is 30.

The square root of 2212181814 is about 47033.8369049347. The cubic root of 2212181814 is about 1302.9875695472.

Adding to 2212181814 its reverse (4181812122), we get a palindrome (6393993936).

The spelling of 2212181814 in words is "two billion, two hundred twelve million, one hundred eighty-one thousand, eight hundred fourteen".