12012101111112 has 64 divisors (see below), whose sum is σ = 30064786994880. Its totient is φ = 3999430566912.

The previous prime is 12012101111081. The next prime is 12012101111117. The reversal of 12012101111112 is 21111110121021.

It is a junction number, because it is equal to n+sod(n) for n = 12012101111091 and 12012101111100.

It is not an unprimeable number, because it can be changed into a prime (12012101111117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146157343 + ... + 146239505.

It is an arithmetic number, because the mean of its divisors is an integer number (469762296795).

Almost surely, 2^{12012101111112} is an apocalyptic number.

12012101111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12012101111112 is an abundant number, since it is smaller than the sum of its proper divisors (18052685883768).

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

12012101111112 is a wasteful number, since it uses less digits than its factorization.

12012101111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89102 (or 89098 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12012101111112 its reverse (21111110121021), we get a palindrome (33123211232133).

Subtracting 12012101111112 from its reverse (21111110121021), we obtain a palindrome (9099009009909).

The spelling of 12012101111112 in words is "twelve trillion, twelve billion, one hundred one million, one hundred eleven thousand, one hundred twelve".