12012121102212 has 192 divisors, whose sum is σ = 38879617996800. Its totient is φ = 3115807896960.

The previous prime is 12012121102187. The next prime is 12012121102213. The reversal of 12012121102212 is 21220112121021.

12012121102212 is a `hidden beast` number, since 120 + 1 + 212 + 110 + 221 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (12012121102213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5168218 + ... + 7122830.

It is an arithmetic number, because the mean of its divisors is an integer number (202498010400).

Almost surely, 2^{12012121102212} is an apocalyptic number.

12012121102212 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 12012121102212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19439808998400).

12012121102212 is an abundant number, since it is smaller than the sum of its proper divisors (26867496894588).

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

12012121102212 is a wasteful number, since it uses less digits than its factorization.

12012121102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955383 (or 1955375 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12012121102212 its reverse (21220112121021), we get a palindrome (33232233223233).

The spelling of 12012121102212 in words is "twelve trillion, twelve billion, one hundred twenty-one million, one hundred two thousand, two hundred twelve".