2188212 has 48 divisors (see below), whose sum is σ = 5597760. Its totient is φ = 665184.

The previous prime is 2188181. The next prime is 2188213. The reversal of 2188212 is 2128812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188213) 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, 26323 + ... + 26405.

It is an arithmetic number, because the mean of its divisors is an integer number (116620).

2^2188212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2188212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2798880).

2188212 is an abundant number, since it is smaller than the sum of its proper divisors (3409548).

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

2188212 is a wasteful number, since it uses less digits than its factorization.

2188212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 101 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 2188212 is about 1479.2606261237. The cubic root of 2188212 is about 129.8264350406.

The spelling of 2188212 in words is "two million, one hundred eighty-eight thousand, two hundred twelve".