1382221 has 2 divisors, whose sum is σ = 1382222. Its totient is φ = 1382220.

The previous prime is 1382207. The next prime is 1382237. The reversal of 1382221 is 1222831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1028196 + 354025 = 1014^2 + 595^2 .

It is an emirp because it is prime and its reverse (1222831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1382221 - 2⁵ = 1382189 is a prime.

1382221 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1382201) 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, 691110 + 691111.

It is an arithmetic number, because the mean of its divisors is an integer number (691111).

2^1382221 is an apocalyptic number.

It is an amenable number.

1382221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1382221 is an equidigital number, since it uses as much as digits as its factorization.

1382221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 1382221 is about 1175.6789527758. The cubic root of 1382221 is about 111.3933236718.

The spelling of 1382221 in words is "one million, three hundred eighty-two thousand, two hundred twenty-one".