2111172 has 48 divisors (see below), whose sum is σ = 5776512. Its totient is φ = 587520.

The previous prime is 2111167. The next prime is 2111177. The reversal of 2111172 is 2711112.

It is an interprime number because it is at equal distance from previous prime (2111167) and next prime (2111177).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111177) 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, 3138 + ... + 3750.

It is an arithmetic number, because the mean of its divisors is an integer number (120344).

2^2111172 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 2111172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2888256).

2111172 is an abundant number, since it is smaller than the sum of its proper divisors (3665340).

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

2111172 is a wasteful number, since it uses less digits than its factorization.

2111172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 666 counting only the distinct ones).

The product of its digits is 28, while the sum is 15.

The square root of 2111172 is about 1452.9872676662. The cubic root of 2111172 is about 128.2846043515.

Adding to 2111172 its reverse (2711112), we get a palindrome (4822284).

The spelling of 2111172 in words is "two million, one hundred eleven thousand, one hundred seventy-two".