165216022 has 8 divisors (see below), whose sum is σ = 247935672. Its totient is φ = 82570800.

The previous prime is 165215983. The next prime is 165216031. The reversal of 165216022 is 220612561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12679 + ... + 22162.

It is an arithmetic number, because the mean of its divisors is an integer number (30991959).

Almost surely, 2^165216022 is an apocalyptic number.

165216022 is a deficient number, since it is larger than the sum of its proper divisors (82719650).

165216022 is a wasteful number, since it uses less digits than its factorization.

165216022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37214.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 165216022 is about 12853.6384732106. The cubic root of 165216022 is about 548.7199122500.

Adding to 165216022 its reverse (220612561), we get a palindrome (385828583).

The spelling of 165216022 in words is "one hundred sixty-five million, two hundred sixteen thousand, twenty-two".