11320221 has 8 divisors (see below), whose sum is σ = 16465824. Its totient is φ = 6860720.

The previous prime is 11320213. The next prime is 11320229. The reversal of 11320221 is 12202311.

It is an interprime number because it is at equal distance from previous prime (11320213) and next prime (11320229).

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

It is a cyclic number.

It is not a de Polignac number, because 11320221 - 2³ = 11320213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11320197 and 11320206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11320229) 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, 171486 + ... + 171551.

It is an arithmetic number, because the mean of its divisors is an integer number (2058228).

Almost surely, 2^11320221 is an apocalyptic number.

11320221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11320221 is a deficient number, since it is larger than the sum of its proper divisors (5145603).

11320221 is a wasteful number, since it uses less digits than its factorization.

11320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343051.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 11320221 is about 3364.5536108078. The cubic root of 11320221 is about 224.5354761952.

Adding to 11320221 its reverse (12202311), we get a palindrome (23522532).

The spelling of 11320221 in words is "eleven million, three hundred twenty thousand, two hundred twenty-one".