1066220221141 has 2 divisors, whose sum is σ = 1066220221142. Its totient is φ = 1066220221140.

The previous prime is 1066220221133. The next prime is 1066220221219. The reversal of 1066220221141 is 1411220226601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 913800253041 + 152419968100 = 955929^2 + 390410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066220221141 - 2³ = 1066220221133 is a prime.

It is a super-2 number, since 2×1066220221141² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066220221541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533110110570 + 533110110571.

It is an arithmetic number, because the mean of its divisors is an integer number (533110110571).

Almost surely, 2^{1066220221141} is an apocalyptic number.

It is an amenable number.

1066220221141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066220221141 is an equidigital number, since it uses as much as digits as its factorization.

1066220221141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 1066220221141 its reverse (1411220226601), we get a palindrome (2477440447742).

The spelling of 1066220221141 in words is "one trillion, sixty-six billion, two hundred twenty million, two hundred twenty-one thousand, one hundred forty-one".