11315121 has 4 divisors (see below), whose sum is σ = 15086832. Its totient is φ = 7543412.

The previous prime is 11315111. The next prime is 11315123. The reversal of 11315121 is 12151311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11315121 - 2⁷ = 11314993 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11315121.

It is not an unprimeable number, because it can be changed into a prime (11315123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1885851 + ... + 1885856.

It is an arithmetic number, because the mean of its divisors is an integer number (3771708).

Almost surely, 2^11315121 is an apocalyptic number.

It is an amenable number.

11315121 is a deficient number, since it is larger than the sum of its proper divisors (3771711).

11315121 is an equidigital number, since it uses as much as digits as its factorization.

11315121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771710.

The product of its digits is 30, while the sum is 15.

The square root of 11315121 is about 3363.7956239938. The cubic root of 11315121 is about 224.5017517964.

Adding to 11315121 its reverse (12151311), we get a palindrome (23466432).

The spelling of 11315121 in words is "eleven million, three hundred fifteen thousand, one hundred twenty-one".