165201101 has 4 divisors (see below), whose sum is σ = 177908892. Its totient is φ = 152493312.

The previous prime is 165201079. The next prime is 165201103. The reversal of 165201101 is 101102561.

165201101 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.

It can be written as a sum of positive squares in 2 ways, for example, as 26574025 + 138627076 = 5155^2 + 11774^2 .

It is a cyclic number.

It is not a de Polignac number, because 165201101 - 2⁶ = 165201037 is a prime.

It is a super-2 number, since 2×165201101² = 54582807543224402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165201103) 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, 6353876 + ... + 6353901.

It is an arithmetic number, because the mean of its divisors is an integer number (44477223).

Almost surely, 2^165201101 is an apocalyptic number.

It is an amenable number.

165201101 is a deficient number, since it is larger than the sum of its proper divisors (12707791).

165201101 is a wasteful number, since it uses less digits than its factorization.

165201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12707790.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 165201101 is about 12853.0580407932. The cubic root of 165201101 is about 548.7033930767.

Adding to 165201101 its reverse (101102561), we get a palindrome (266303662).

The spelling of 165201101 in words is "one hundred sixty-five million, two hundred one thousand, one hundred one".