165215122 has 8 divisors (see below), whose sum is σ = 249606000. Its totient is φ = 82013124.

The previous prime is 165215119. The next prime is 165215161. The reversal of 165215122 is 221512561.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296872 + ... + 297427.

It is an arithmetic number, because the mean of its divisors is an integer number (31200750).

Almost surely, 2^165215122 is an apocalyptic number.

165215122 is a deficient number, since it is larger than the sum of its proper divisors (84390878).

165215122 is a wasteful number, since it uses less digits than its factorization.

165215122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594440.

The product of its digits is 1200, while the sum is 25.

The square root of 165215122 is about 12853.6034636206. The cubic root of 165215122 is about 548.7189158801.

Adding to 165215122 its reverse (221512561), we get a palindrome (386727683).

The spelling of 165215122 in words is "one hundred sixty-five million, two hundred fifteen thousand, one hundred twenty-two".