165101212 has 24 divisors (see below), whose sum is σ = 306848304. Its totient is φ = 77459712.

The previous prime is 165101191. The next prime is 165101213. The reversal of 165101212 is 212101561.

It is a self number, because there is not a number n which added to its sum of digits gives 165101212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165101213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20098 + ... + 27094.

It is an arithmetic number, because the mean of its divisors is an integer number (12785346).

Almost surely, 2^165101212 is an apocalyptic number.

It is an amenable number.

165101212 is a deficient number, since it is larger than the sum of its proper divisors (141747092).

165101212 is a wasteful number, since it uses less digits than its factorization.

165101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7365 (or 7363 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 165101212 is about 12849.1716464525. The cubic root of 165101212 is about 548.5927794398.

Adding to 165101212 its reverse (212101561), we get a palindrome (377202773).

The spelling of 165101212 in words is "one hundred sixty-five million, one hundred one thousand, two hundred twelve".