11682221 has 2 divisors, whose sum is σ = 11682222. Its totient is φ = 11682220.

The previous prime is 11682217. The next prime is 11682227. The reversal of 11682221 is 12228611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8185321 + 3496900 = 2861^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 11682221 - 2² = 11682217 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11682227) 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 as a sum of consecutive naturals, namely, 5841110 + 5841111.

It is an arithmetic number, because the mean of its divisors is an integer number (5841111).

Almost surely, 2^11682221 is an apocalyptic number.

It is an amenable number.

11682221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11682221 is an equidigital number, since it uses as much as digits as its factorization.

11682221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 23.

The square root of 11682221 is about 3417.9264181664. The cubic root of 11682221 is about 226.9038192159.

The spelling of 11682221 in words is "eleven million, six hundred eighty-two thousand, two hundred twenty-one".