12011125 has 48 divisors (see below), whose sum is σ = 18246384. Its totient is φ = 7862400.

The previous prime is 12011123. The next prime is 12011143. The reversal of 12011125 is 52111021.

It can be written as a sum of positive squares in 8 ways, for example, as 815409 + 11195716 = 903^2 + 3346^2 .

It is not a de Polignac number, because 12011125 - 2¹ = 12011123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226599 + ... + 226651.

It is an arithmetic number, because the mean of its divisors is an integer number (380133).

Almost surely, 2^12011125 is an apocalyptic number.

It is an amenable number.

12011125 is a deficient number, since it is larger than the sum of its proper divisors (6235259).

12011125 is an equidigital number, since it uses as much as digits as its factorization.

12011125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 12011125 is about 3465.7069985791. The cubic root of 12011125 is about 229.0135763580.

Adding to 12011125 its reverse (52111021), we get a palindrome (64122146).

The spelling of 12011125 in words is "twelve million, eleven thousand, one hundred twenty-five".