111023232012 has 288 divisors, whose sum is σ = 377309721600. Its totient is φ = 27582888960.

The previous prime is 111023231971. The next prime is 111023232013. The reversal of 111023232012 is 210232320111.

111023232012 is a `hidden beast` number, since 1 + 110 + 232 + 320 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (111023232013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2077564 + ... + 2130332.

It is an arithmetic number, because the mean of its divisors is an integer number (1310103200).

Almost surely, 2^111023232012 is an apocalyptic number.

111023232012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111023232012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188654860800).

111023232012 is an abundant number, since it is smaller than the sum of its proper divisors (266286489588).

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

111023232012 is a wasteful number, since it uses less digits than its factorization.

111023232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52834 (or 52815 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 111023232012 its reverse (210232320111), we get a palindrome (321255552123).

The spelling of 111023232012 in words is "one hundred eleven billion, twenty-three million, two hundred thirty-two thousand, twelve".