111545112 has 32 divisors (see below), whose sum is σ = 318700800. Its totient is φ = 31869984.

The previous prime is 111545069. The next prime is 111545113. The reversal of 111545112 is 211545111.

It is a super-2 number, since 2×111545112² = 24884624022185088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111545113) 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 7 ways as a sum of consecutive naturals, for example, 331812 + ... + 332147.

It is an arithmetic number, because the mean of its divisors is an integer number (9959400).

Almost surely, 2^111545112 is an apocalyptic number.

111545112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111545112 is an abundant number, since it is smaller than the sum of its proper divisors (207155688).

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

111545112 is a wasteful number, since it uses less digits than its factorization.

111545112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663975 (or 663971 counting only the distinct ones).

The product of its digits is 200, while the sum is 21.

The square root of 111545112 is about 10561.4919400623. The cubic root of 111545112 is about 481.3749811561.

Subtracting 111545112 from its reverse (211545111), we obtain a palindrome (99999999).

The spelling of 111545112 in words is "one hundred eleven million, five hundred forty-five thousand, one hundred twelve".