2211712 has 32 divisors (see below), whose sum is σ = 4534920. Its totient is φ = 1073664.

The previous prime is 2211707. The next prime is 2211779. The reversal of 2211712 is 2171122.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4503 + ... + 4969.

2^2211712 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 2211712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2267460).

2211712 is an abundant number, since it is smaller than the sum of its proper divisors (2323208).

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

2211712 is an equidigital number, since it uses as much as digits as its factorization.

2211712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 506 counting only the distinct ones).

The product of its digits is 56, while the sum is 16.

The square root of 2211712 is about 1487.1825711728. The cubic root of 2211712 is about 130.2895321984.

Adding to 2211712 its reverse (2171122), we get a palindrome (4382834).

The spelling of 2211712 in words is "two million, two hundred eleven thousand, seven hundred twelve".