111012112180 has 12 divisors (see below), whose sum is σ = 233125435620. Its totient is φ = 44404844864.

The previous prime is 111012112147. The next prime is 111012112181. The reversal of 111012112180 is 81211210111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30562731684 + 80449380496 = 174822^2 + 283636^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012112181) 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, 2775302785 + ... + 2775302824.

It is an arithmetic number, because the mean of its divisors is an integer number (19427119635).

Almost surely, 2^111012112180 is an apocalyptic number.

111012112180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012112180 is an abundant number, since it is smaller than the sum of its proper divisors (122113323440).

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

111012112180 is a wasteful number, since it uses less digits than its factorization.

111012112180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550605618 (or 5550605616 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111012112180 its reverse (81211210111), we get a palindrome (192223322291).

The spelling of 111012112180 in words is "one hundred eleven billion, twelve million, one hundred twelve thousand, one hundred eighty".