2111225 has 6 divisors (see below), whose sum is σ = 2617950. Its totient is φ = 1688960.

The previous prime is 2111189. The next prime is 2111231. The reversal of 2111225 is 5221112.

2111225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 16 + 2111209 = 4^2 + 1453^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2111225 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42200 + ... + 42249.

It is an arithmetic number, because the mean of its divisors is an integer number (436325).

2^2111225 is an apocalyptic number.

2111225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111225 is a deficient number, since it is larger than the sum of its proper divisors (506725).

2111225 is an equidigital number, since it uses as much as digits as its factorization.

2111225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84459 (or 84454 counting only the distinct ones).

The product of its digits is 40, while the sum is 14.

The square root of 2111225 is about 1453.0055058395. The cubic root of 2111225 is about 128.2856778512.

Adding to 2111225 its reverse (5221112), we get a palindrome (7332337).

The spelling of 2111225 in words is "two million, one hundred eleven thousand, two hundred twenty-five".