2218612 has 12 divisors (see below), whose sum is σ = 4235616. Its totient is φ = 1008440.

The previous prime is 2218609. The next prime is 2218613. The reversal of 2218612 is 2168122.

2218612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25168 + ... + 25255.

It is an arithmetic number, because the mean of its divisors is an integer number (352968).

2^2218612 is an apocalyptic number.

2218612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2218612 is a deficient number, since it is larger than the sum of its proper divisors (2017004).

2218612 is a wasteful number, since it uses less digits than its factorization.

2218612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50438 (or 50436 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 2218612 is about 1489.5005874453. The cubic root of 2218612 is about 130.4248820247.

The spelling of 2218612 in words is "two million, two hundred eighteen thousand, six hundred twelve".