165020022 has 12 divisors (see below), whose sum is σ = 357543420. Its totient is φ = 55006668.

The previous prime is 165019999. The next prime is 165020027. The reversal of 165020022 is 220020561.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 9167779 = 165020022 / (1 + 6 + 5 + 0 + 2 + 0 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 165019977 and 165020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165020027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4583872 + ... + 4583907.

It is an arithmetic number, because the mean of its divisors is an integer number (29795285).

Almost surely, 2^165020022 is an apocalyptic number.

165020022 is an abundant number, since it is smaller than the sum of its proper divisors (192523398).

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

165020022 is a wasteful number, since it uses less digits than its factorization.

165020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167787 (or 9167784 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 165020022 is about 12846.0119103168. The cubic root of 165020022 is about 548.5028395574.

Adding to 165020022 its reverse (220020561), we get a palindrome (385040583).

The spelling of 165020022 in words is "one hundred sixty-five million, twenty thousand, twenty-two".