12012111122112 has 168 divisors, whose sum is σ = 37411801589760. Its totient is φ = 3670933685760.

The previous prime is 12012111122087. The next prime is 12012111122191. The reversal of 12012111122112 is 21122111121021.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17363928 + ... + 18042455.

Almost surely, 2^{12012111122112} is an apocalyptic number.

12012111122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12012111122112 is an abundant number, since it is smaller than the sum of its proper divisors (25399690467648).

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

12012111122112 is a wasteful number, since it uses less digits than its factorization.

12012111122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35406451 (or 35406438 counting only the distinct ones).

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

Adding to 12012111122112 its reverse (21122111121021), we get a palindrome (33134222243133).

The spelling of 12012111122112 in words is "twelve trillion, twelve billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twelve".