1073221 has 2 divisors, whose sum is σ = 1073222. Its totient is φ = 1073220.

The previous prime is 1073213. The next prime is 1073239. The reversal of 1073221 is 1223701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060900 + 12321 = 1030^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073221 - 2³ = 1073213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1073195 and 1073204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1073201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536610 + 536611.

It is an arithmetic number, because the mean of its divisors is an integer number (536611).

2^1073221 is an apocalyptic number.

It is an amenable number.

1073221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073221 is an equidigital number, since it uses as much as digits as its factorization.

1073221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1073221 is about 1035.9638024564. The cubic root of 1073221 is about 102.3834407733.

Adding to 1073221 its reverse (1223701), we get a palindrome (2296922).

The spelling of 1073221 in words is "one million, seventy-three thousand, two hundred twenty-one".