111106161 has 32 divisors (see below), whose sum is σ = 168618240. Its totient is φ = 73191600.

The previous prime is 111106159. The next prime is 111106183. The reversal of 111106161 is 161601111.

It is not a de Polignac number, because 111106161 - 2¹ = 111106159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111106111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220636 + ... + 221138.

It is an arithmetic number, because the mean of its divisors is an integer number (5269320).

Almost surely, 2^111106161 is an apocalyptic number.

It is an amenable number.

111106161 is a deficient number, since it is larger than the sum of its proper divisors (57512079).

111106161 is an frugal number, since it uses more digits than its factorization.

111106161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 111106161 is about 10540.6907268926. The cubic root of 111106161 is about 480.7427173675.

Adding to 111106161 its reverse (161601111), we get a palindrome (272707272).

It can be divided in two parts, 11110 and 6161, that added together give a palindrome (17271).

The spelling of 111106161 in words is "one hundred eleven million, one hundred six thousand, one hundred sixty-one".