211125 has 16 divisors (see below), whose sum is σ = 351936. Its totient is φ = 112400.

The previous prime is 211097. The next prime is 211129. The reversal of 211125 is 521112.

It is not a de Polignac number, because 211125 - 2⁵ = 211093 is a prime.

211125 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 211125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211129) 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, 94 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (21996).

2²¹¹¹²⁵ is an apocalyptic number.

211125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211125 is a deficient number, since it is larger than the sum of its proper divisors (140811).

211125 is an equidigital number, since it uses as much as digits as its factorization.

211125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 571 counting only the distinct ones).

The product of its digits is 20, while the sum is 12.

The square root of 211125 is about 459.4834055763. The cubic root of 211125 is about 59.5451720148.

Adding to 211125 its reverse (521112), we get a palindrome (732237).

The spelling of 211125 in words is "two hundred eleven thousand, one hundred twenty-five".