111412161 has 36 divisors (see below), whose sum is σ = 192320128. Its totient is φ = 60877872.

The previous prime is 111412159. The next prime is 111412193. The reversal of 111412161 is 161214111.

It is not a de Polignac number, because 111412161 - 2¹ = 111412159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111412121) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31656 + ... + 34998.

Almost surely, 2^111412161 is an apocalyptic number.

It is an amenable number.

111412161 is a deficient number, since it is larger than the sum of its proper divisors (80907967).

111412161 is a wasteful number, since it uses less digits than its factorization.

111412161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402 (or 3376 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 111412161 is about 10555.1959242830. The cubic root of 111412161 is about 481.1836542935.

Adding to 111412161 its reverse (161214111), we get a palindrome (272626272).

The spelling of 111412161 in words is "one hundred eleven million, four hundred twelve thousand, one hundred sixty-one".