111420012 has 48 divisors (see below), whose sum is σ = 284385024. Its totient is φ = 33672000.

The previous prime is 111419963. The next prime is 111420017. The reversal of 111420012 is 210024111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 111420012.

It is not an unprimeable number, because it can be changed into a prime (111420017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59937 + ... + 61767.

It is an arithmetic number, because the mean of its divisors is an integer number (5924688).

Almost surely, 2^111420012 is an apocalyptic number.

111420012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111420012 is an abundant number, since it is smaller than the sum of its proper divisors (172965012).

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

111420012 is a wasteful number, since it uses less digits than its factorization.

111420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310 (or 2308 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 111420012 is about 10555.5678198759. The cubic root of 111420012 is about 481.1949567226.

Adding to 111420012 its reverse (210024111), we get a palindrome (321444123).

The spelling of 111420012 in words is "one hundred eleven million, four hundred twenty thousand, twelve".