161001112 has 16 divisors (see below), whose sum is σ = 303210360. Its totient is φ = 80145024.

The previous prime is 161001107. The next prime is 161001133. The reversal of 161001112 is 211100161.

It is a junction number, because it is equal to n+sod(n) for n = 161001092 and 161001101.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42513 + ... + 46144.

Almost surely, 2^161001112 is an apocalyptic number.

It is an amenable number.

161001112 is a deficient number, since it is larger than the sum of its proper divisors (142209248).

161001112 is a wasteful number, since it uses less digits than its factorization.

161001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88890 (or 88886 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 161001112 is about 12688.6213593124. The cubic root of 161001112 is about 544.0134350056.

Adding to 161001112 its reverse (211100161), we get a palindrome (372101273).

The spelling of 161001112 in words is "one hundred sixty-one million, one thousand, one hundred twelve".