11129321 has 16 divisors (see below), whose sum is σ = 13190400. Its totient is φ = 9384480.

The previous prime is 11129297. The next prime is 11129323. The reversal of 11129321 is 12392111.

It is not a de Polignac number, because 11129321 - 2¹⁸ = 10867177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11129293 and 11129302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11129323) 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 15 ways as a sum of consecutive naturals, for example, 24125 + ... + 24581.

It is an arithmetic number, because the mean of its divisors is an integer number (824400).

Almost surely, 2^11129321 is an apocalyptic number.

It is an amenable number.

11129321 is a deficient number, since it is larger than the sum of its proper divisors (2061079).

11129321 is an frugal number, since it uses more digits than its factorization.

11129321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 535 counting only the distinct ones).

The product of its digits is 108, while the sum is 20.

The square root of 11129321 is about 3336.0636984326. The cubic root of 11129321 is about 223.2661531558.

The spelling of 11129321 in words is "eleven million, one hundred twenty-nine thousand, three hundred twenty-one".