12012111211212 has 36 divisors (see below), whose sum is σ = 34701654610896. Its totient is φ = 3432031774560.

The previous prime is 12012111211183. The next prime is 12012111211337. The reversal of 12012111211212 is 21211211121021.

It is a happy number.

12012111211212 is a `hidden beast` number, since 120 + 1 + 211 + 121 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23833553739 + ... + 23833554242.

Almost surely, 2^{12012111211212} is an apocalyptic number.

12012111211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12012111211212 is an abundant number, since it is smaller than the sum of its proper divisors (22689543399684).

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

12012111211212 is a wasteful number, since it uses less digits than its factorization.

12012111211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47667107998 (or 47667107993 counting only the distinct ones).

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

Adding to 12012111211212 its reverse (21211211121021), we get a palindrome (33223322332233).

The spelling of 12012111211212 in words is "twelve trillion, twelve billion, one hundred eleven million, two hundred eleven thousand, two hundred twelve".