1166112205 has 4 divisors (see below), whose sum is σ = 1399334652. Its totient is φ = 932889760.

The previous prime is 1166112203. The next prime is 1166112317. The reversal of 1166112205 is 5022116611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5022116611 = 4231 ⋅1186981.

It can be written as a sum of positive squares in 2 ways, for example, as 274134249 + 891977956 = 16557^2 + 29866^2 .

It is not a de Polignac number, because 1166112205 - 2¹ = 1166112203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166112203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116611216 + ... + 116611225.

It is an arithmetic number, because the mean of its divisors is an integer number (349833663).

Almost surely, 2^1166112205 is an apocalyptic number.

It is an amenable number.

1166112205 is a deficient number, since it is larger than the sum of its proper divisors (233222447).

1166112205 is an equidigital number, since it uses as much as digits as its factorization.

1166112205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233222446.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1166112205 is about 34148.3851009092. The cubic root of 1166112205 is about 1052.5598027416.

Adding to 1166112205 its reverse (5022116611), we get a palindrome (6188228816).

The spelling of 1166112205 in words is "one billion, one hundred sixty-six million, one hundred twelve thousand, two hundred five".