111540012 has 12 divisors (see below), whose sum is σ = 260260056. Its totient is φ = 37180000.

The previous prime is 111540007. The next prime is 111540017. The reversal of 111540012 is 210045111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111540007) and next prime (111540017).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 111539973 and 111540000.

It is not an unprimeable number, because it can be changed into a prime (111540017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4647489 + ... + 4647512.

It is an arithmetic number, because the mean of its divisors is an integer number (21688338).

Almost surely, 2^111540012 is an apocalyptic number.

111540012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111540012 is an abundant number, since it is smaller than the sum of its proper divisors (148720044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111540012 is a wasteful number, since it uses less digits than its factorization.

111540012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295008 (or 9295006 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 111540012 is about 10561.2504941413. The cubic root of 111540012 is about 481.3676446631.

Adding to 111540012 its reverse (210045111), we get a palindrome (321585123).

The spelling of 111540012 in words is "one hundred eleven million, five hundred forty thousand, twelve".