111012111222012 has 288 divisors, whose sum is σ = 376794143631360. Its totient is φ = 26614470205440.

The previous prime is 111012111222011. The next prime is 111012111222017. The reversal of 111012111222012 is 210222111210111.

It is a happy number.

111012111222012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012111222011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 569595693 + ... + 569790555.

It is an arithmetic number, because the mean of its divisors is an integer number (1308312998720).

Almost surely, 2^{111012111222012} is an apocalyptic number.

111012111222012 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 111012111222012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188397071815680).

111012111222012 is an abundant number, since it is smaller than the sum of its proper divisors (265782032409348).

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

111012111222012 is a wasteful number, since it uses less digits than its factorization.

111012111222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210713 (or 210708 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111012111222012 its reverse (210222111210111), we get a palindrome (321234222432123).

The spelling of 111012111222012 in words is "one hundred eleven trillion, twelve billion, one hundred eleven million, two hundred twenty-two thousand, twelve".