11673221 has 6 divisors (see below), whose sum is σ = 13579110. Its totient is φ = 10005576.

The previous prime is 11673199. The next prime is 11673229. The reversal of 11673221 is 12237611.

It can be written as a sum of positive squares in only one way, i.e., 6964321 + 4708900 = 2639^2 + 2170^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11673221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11673229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119066 + ... + 119163.

It is an arithmetic number, because the mean of its divisors is an integer number (2263185).

Almost surely, 2^11673221 is an apocalyptic number.

It is an amenable number.

11673221 is a deficient number, since it is larger than the sum of its proper divisors (1905889).

11673221 is an equidigital number, since it uses as much as digits as its factorization.

11673221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238243 (or 238236 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 11673221 is about 3416.6095767588. The cubic root of 11673221 is about 226.8455352356.

It can be divided in two parts, 116 and 73221, that added together give a palindrome (73337).

The spelling of 11673221 in words is "eleven million, six hundred seventy-three thousand, two hundred twenty-one".