12012212211220 has 192 divisors, whose sum is σ = 29373272248320. Its totient is φ = 4089365102592.

The previous prime is 12012212211211. The next prime is 12012212211229. The reversal of 12012212211220 is 2211221221021.

12012212211220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12012212211211) and next prime (12012212211229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012212211229) 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, 105208884 + ... + 105322996.

It is an arithmetic number, because the mean of its divisors is an integer number (152985792960).

Almost surely, 2^{12012212211220} is an apocalyptic number.

12012212211220 is a gapful number since it is divisible by the number (10) 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 12012212211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14686636124160).

12012212211220 is an abundant number, since it is smaller than the sum of its proper divisors (17361060037100).

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

12012212211220 is a wasteful number, since it uses less digits than its factorization.

12012212211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114794 (or 114792 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12012212211220 its reverse (2211221221021), we get a palindrome (14223433432241).

The spelling of 12012212211220 in words is "twelve trillion, twelve billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty".