11337221 has 4 divisors (see below), whose sum is σ = 12956832. Its totient is φ = 9717612.

The previous prime is 11337191. The next prime is 11337233. The reversal of 11337221 is 12273311.

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 a de Polignac number, because none of the positive numbers 2^k-11337221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11337193 and 11337202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11337421) 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, 809795 + ... + 809808.

It is an arithmetic number, because the mean of its divisors is an integer number (3239208).

Almost surely, 2^11337221 is an apocalyptic number.

It is an amenable number.

11337221 is a deficient number, since it is larger than the sum of its proper divisors (1619611).

11337221 is an equidigital number, since it uses as much as digits as its factorization.

11337221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619610.

The product of its digits is 252, while the sum is 20.

The square root of 11337221 is about 3367.0790011522. The cubic root of 11337221 is about 224.6478177571.

The spelling of 11337221 in words is "eleven million, three hundred thirty-seven thousand, two hundred twenty-one".