1066201181 has 2 divisors, whose sum is σ = 1066201182. Its totient is φ = 1066201180.

The previous prime is 1066201163. The next prime is 1066201183. The reversal of 1066201181 is 1811026601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701773081 + 364428100 = 26491^2 + 19090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066201181 - 2²⁶ = 999092317 is a prime.

It is a super-2 number, since 2×1066201181² = 2273569916731589522, which contains 22 as substring.

Together with 1066201183, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1066201181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066201183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533100590 + 533100591.

It is an arithmetic number, because the mean of its divisors is an integer number (533100591).

Almost surely, 2^1066201181 is an apocalyptic number.

It is an amenable number.

1066201181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066201181 is an equidigital number, since it uses as much as digits as its factorization.

1066201181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1066201181 is about 32652.7361946897. The cubic root of 1066201181 is about 1021.5972607091.

Adding to 1066201181 its reverse (1811026601), we get a palindrome (2877227782).

The spelling of 1066201181 in words is "one billion, sixty-six million, two hundred one thousand, one hundred eighty-one".