12012222121212 has 24 divisors (see below), whose sum is σ = 28028896224336. Its totient is φ = 4004020048768.

The previous prime is 12012222121183. The next prime is 12012222121241. The reversal of 12012222121212 is 21212122221021.

It is an interprime number because it is at equal distance from previous prime (12012222121183) and next prime (12012222121241).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5816793 + ... + 7606544.

It is an arithmetic number, because the mean of its divisors is an integer number (1167870676014).

Almost surely, 2^{12012222121212} is an apocalyptic number.

12012222121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12012222121212 is an abundant number, since it is smaller than the sum of its proper divisors (16016674103124).

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

12012222121212 is a wasteful number, since it uses less digits than its factorization.

12012222121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13497917 (or 13497915 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12012222121212 its reverse (21212122221021), we get a palindrome (33224344342233).

The spelling of 12012222121212 in words is "twelve trillion, twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".