11332221 has 8 divisors (see below), whose sum is σ = 15189504. Its totient is φ = 7514880.

The previous prime is 11332213. The next prime is 11332231. The reversal of 11332221 is 12223311.

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

It is not a de Polignac number, because 11332221 - 2³ = 11332213 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11332221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11332231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9316 + ... + 10461.

It is an arithmetic number, because the mean of its divisors is an integer number (1898688).

Almost surely, 2^11332221 is an apocalyptic number.

It is an amenable number.

11332221 is a deficient number, since it is larger than the sum of its proper divisors (3857283).

11332221 is a wasteful number, since it uses less digits than its factorization.

11332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19971.

The product of its digits is 72, while the sum is 15.

The square root of 11332221 is about 3366.3364359493. The cubic root of 11332221 is about 224.6147877857.

Adding to 11332221 its reverse (12223311), we get a palindrome (23555532).

The spelling of 11332221 in words is "eleven million, three hundred thirty-two thousand, two hundred twenty-one".