1041221 has 2 divisors, whose sum is σ = 1041222. Its totient is φ = 1041220.

The previous prime is 1041203. The next prime is 1041223. The reversal of 1041221 is 1221401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 376996 = 815^2 + 614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1041221 is a prime.

Together with 1041223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1041223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520610 + 520611.

It is an arithmetic number, because the mean of its divisors is an integer number (520611).

2^1041221 is an apocalyptic number.

It is an amenable number.

1041221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1041221 is an equidigital number, since it uses as much as digits as its factorization.

1041221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1041221 is about 1020.4023716162. The cubic root of 1041221 is about 101.3555744790.

Adding to 1041221 its reverse (1221401), we get a palindrome (2262622).

The spelling of 1041221 in words is "one million, forty-one thousand, two hundred twenty-one".