165512222 has 8 divisors (see below), whose sum is σ = 256829400. Its totient is φ = 79902424.

The previous prime is 165512183. The next prime is 165512231. The reversal of 165512222 is 222215561.

165512222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 165512191 and 165512200.

It is a congruent number.

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, 1426772 + ... + 1426887.

It is an arithmetic number, because the mean of its divisors is an integer number (32103675).

Almost surely, 2^165512222 is an apocalyptic number.

165512222 is a deficient number, since it is larger than the sum of its proper divisors (91317178).

165512222 is a wasteful number, since it uses less digits than its factorization.

165512222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853690.

The product of its digits is 2400, while the sum is 26.

The square root of 165512222 is about 12865.1553430186. The cubic root of 165512222 is about 549.0476322940.

Adding to 165512222 its reverse (222215561), we get a palindrome (387727783).

The spelling of 165512222 in words is "one hundred sixty-five million, five hundred twelve thousand, two hundred twenty-two".