2291212 has 48 divisors (see below), whose sum is σ = 5144832. Its totient is φ = 866880.

The previous prime is 2291197. The next prime is 2291213. The reversal of 2291212 is 2121922.

2291212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2291212.

It is not an unprimeable number, because it can be changed into a prime (2291213) 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, 13158 + ... + 13330.

It is an arithmetic number, because the mean of its divisors is an integer number (107184).

2^2291212 is an apocalyptic number.

2291212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572416).

2291212 is an abundant number, since it is smaller than the sum of its proper divisors (2853620).

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

2291212 is a wasteful number, since it uses less digits than its factorization.

2291212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 236 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 2291212 is about 1513.6749981419. The cubic root of 2291212 is about 131.8322785631.

It can be divided in two parts, 229 and 1212, that added together give a palindrome (1441).

The spelling of 2291212 in words is "two million, two hundred ninety-one thousand, two hundred twelve".