166011101 has 4 divisors (see below), whose sum is σ = 166189212. Its totient is φ = 165832992.

The previous prime is 166011071. The next prime is 166011127. The reversal of 166011101 is 101110661.

166011101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101110661 = 1321 ⋅76541.

It can be written as a sum of positive squares in 2 ways, for example, as 48288601 + 117722500 = 6949^2 + 10850^2 .

It is a cyclic number.

It is not a de Polignac number, because 166011101 - 2¹⁰ = 166010077 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 166011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166011301) 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, 87650 + ... + 89523.

It is an arithmetic number, because the mean of its divisors is an integer number (41547303).

Almost surely, 2^166011101 is an apocalyptic number.

It is an amenable number.

166011101 is a deficient number, since it is larger than the sum of its proper divisors (178111).

166011101 is an equidigital number, since it uses as much as digits as its factorization.

166011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178110.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 166011101 is about 12884.5295218723. The cubic root of 166011101 is about 549.5987166588.

Adding to 166011101 its reverse (101110661), we get a palindrome (267121762).

The spelling of 166011101 in words is "one hundred sixty-six million, eleven thousand, one hundred one".