11121375 has 32 divisors (see below), whose sum is σ = 18929664. Its totient is φ = 5796000.

The previous prime is 11121371. The next prime is 11121389. The reversal of 11121375 is 57312111.

It is a happy number.

It is not a de Polignac number, because 11121375 - 2² = 11121371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121371) 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, 17310 + ... + 17940.

It is an arithmetic number, because the mean of its divisors is an integer number (591552).

Almost surely, 2^11121375 is an apocalyptic number.

11121375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11121375 is a deficient number, since it is larger than the sum of its proper divisors (7808289).

11121375 is an equidigital number, since it uses as much as digits as its factorization.

11121375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 686 counting only the distinct ones).

The product of its digits is 210, while the sum is 21.

The square root of 11121375 is about 3334.8725612833. The cubic root of 11121375 is about 223.2130054022.

Adding to 11121375 its reverse (57312111), we get a palindrome (68433486).

The spelling of 11121375 in words is "eleven million, one hundred twenty-one thousand, three hundred seventy-five".