1166111101 has 8 divisors (see below), whose sum is σ = 1185350400. Its totient is φ = 1147024272.

The previous prime is 1166111087. The next prime is 1166111119. The reversal of 1166111101 is 1011116611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166111101 - 2⁵ = 1166111069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166111131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22645 + ... + 53338.

It is an arithmetic number, because the mean of its divisors is an integer number (148168800).

Almost surely, 2^1166111101 is an apocalyptic number.

It is an amenable number.

1166111101 is a deficient number, since it is larger than the sum of its proper divisors (19239299).

1166111101 is a wasteful number, since it uses less digits than its factorization.

1166111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76235.

The product of its (nonzero) digits is 36, while the sum is 19.

The square root of 1166111101 is about 34148.3689361586. The cubic root of 1166111101 is about 1052.5594705762.

Adding to 1166111101 its reverse (1011116611), we get a palindrome (2177227712).

The spelling of 1166111101 in words is "one billion, one hundred sixty-six million, one hundred eleven thousand, one hundred one".