12001220220 has 192 divisors, whose sum is σ = 38407219200. Its totient is φ = 2773155840.

The previous prime is 12001220197. The next prime is 12001220233. The reversal of 12001220220 is 2202210021.

12001220220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12001220196 and 12001220205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1508092 + ... + 1516028.

It is an arithmetic number, because the mean of its divisors is an integer number (200037600).

Almost surely, 2^12001220220 is an apocalyptic number.

12001220220 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 12001220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19203609600).

12001220220 is an abundant number, since it is smaller than the sum of its proper divisors (26405998980).

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

12001220220 is a wasteful number, since it uses less digits than its factorization.

12001220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068 (or 8066 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12001220220 its reverse (2202210021), we get a palindrome (14203430241).

It can be divided in two parts, 12001 and 220220, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 12001220220 in words is "twelve billion, one million, two hundred twenty thousand, two hundred twenty".