1146221 has 2 divisors, whose sum is σ = 1146222. Its totient is φ = 1146220.

The previous prime is 1146217. The next prime is 1146263. The reversal of 1146221 is 1226411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978121 + 168100 = 989^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146221 - 2² = 1146217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1146221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573110 + 573111.

It is an arithmetic number, because the mean of its divisors is an integer number (573111).

2^1146221 is an apocalyptic number.

It is an amenable number.

1146221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146221 is an equidigital number, since it uses as much as digits as its factorization.

1146221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 1146221 is about 1070.6171117631. The cubic root of 1146221 is about 104.6540694176.

The spelling of 1146221 in words is "one million, one hundred forty-six thousand, two hundred twenty-one".