11321121 has 8 divisors (see below), whose sum is σ = 17251264. Its totient is φ = 6469200.

The previous prime is 11321119. The next prime is 11321137. The reversal of 11321121 is 12112311.

11321121 = T₁₇₉₅ + T₁₇₉₆ + ... + T₁₈₀₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11321121 - 2¹ = 11321119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321097 and 11321106.

It is not an unprimeable number, because it can be changed into a prime (11321521) 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 7 ways as a sum of consecutive naturals, for example, 269530 + ... + 269571.

It is an arithmetic number, because the mean of its divisors is an integer number (2156408).

Almost surely, 2^11321121 is an apocalyptic number.

It is an amenable number.

11321121 is a deficient number, since it is larger than the sum of its proper divisors (5930143).

11321121 is an equidigital number, since it uses as much as digits as its factorization.

11321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539111.

The product of its digits is 12, while the sum is 12.

The square root of 11321121 is about 3364.6873554611. The cubic root of 11321121 is about 224.5414265081.

Adding to 11321121 its reverse (12112311), we get a palindrome (23433432).

The spelling of 11321121 in words is "eleven million, three hundred twenty-one thousand, one hundred twenty-one".