165112122 has 16 divisors (see below), whose sum is σ = 377399232. Its totient is φ = 47174880.

The previous prime is 165112121. The next prime is 165112127. The reversal of 165112122 is 221211561.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (165112121) 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, 1965579 + ... + 1965662.

It is an arithmetic number, because the mean of its divisors is an integer number (23587452).

Almost surely, 2^165112122 is an apocalyptic number.

165112122 is an abundant number, since it is smaller than the sum of its proper divisors (212287110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165112122 is a wasteful number, since it uses less digits than its factorization.

165112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931253.

The product of its digits is 240, while the sum is 21.

The square root of 165112122 is about 12849.5961804253. The cubic root of 165112122 is about 548.6048629679.

Adding to 165112122 its reverse (221211561), we get a palindrome (386323683).

The spelling of 165112122 in words is "one hundred sixty-five million, one hundred twelve thousand, one hundred twenty-two".