11821125 has 32 divisors (see below), whose sum is σ = 20367360. Its totient is φ = 6081600.

The previous prime is 11821123. The next prime is 11821127. The reversal of 11821125 is 52112811.

It is an interprime number because it is at equal distance from previous prime (11821123) and next prime (11821127).

It is not a de Polignac number, because 11821125 - 2¹ = 11821123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11821123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10332 + ... + 11418.

It is an arithmetic number, because the mean of its divisors is an integer number (636480).

Almost surely, 2^11821125 is an apocalyptic number.

11821125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11821125 is a deficient number, since it is larger than the sum of its proper divisors (8546235).

11821125 is a wasteful number, since it uses less digits than its factorization.

11821125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1124 counting only the distinct ones).

The product of its digits is 160, while the sum is 21.

The square root of 11821125 is about 3438.1862951271. The cubic root of 11821125 is about 227.7995892040.

Adding to 11821125 its reverse (52112811), we get a palindrome (63933936).

The spelling of 11821125 in words is "eleven million, eight hundred twenty-one thousand, one hundred twenty-five".