11137321 has 4 divisors (see below), whose sum is σ = 11994052. Its totient is φ = 10280592.

The previous prime is 11137297. The next prime is 11137331. The reversal of 11137321 is 12373111.

11137321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 929296 + 10208025 = 964^2 + 3195^2 .

It is a cyclic number.

It is not a de Polignac number, because 11137321 - 2²¹ = 9040169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11137331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428346 + ... + 428371.

It is an arithmetic number, because the mean of its divisors is an integer number (2998513).

Almost surely, 2^11137321 is an apocalyptic number.

It is an amenable number.

11137321 is a deficient number, since it is larger than the sum of its proper divisors (856731).

11137321 is an equidigital number, since it uses as much as digits as its factorization.

11137321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856730.

The product of its digits is 126, while the sum is 19.

The square root of 11137321 is about 3337.2625009130. The cubic root of 11137321 is about 223.3196365452.

The spelling of 11137321 in words is "eleven million, one hundred thirty-seven thousand, three hundred twenty-one".