12021101001220 has 48 divisors (see below), whose sum is σ = 27489269102400. Its totient is φ = 4398283048320.

The previous prime is 12021101001199. The next prime is 12021101001227. The reversal of 12021101001220 is 2210010112021.

12021101001220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12021101001220.

It is not an unprimeable number, because it can be changed into a prime (12021101001227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545410986 + ... + 545433025.

It is an arithmetic number, because the mean of its divisors is an integer number (572693106300).

Almost surely, 2^{12021101001220} is an apocalyptic number.

12021101001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021101001220 is an abundant number, since it is smaller than the sum of its proper divisors (15468168101180).

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

12021101001220 is a wasteful number, since it uses less digits than its factorization.

12021101001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090844068 (or 1090844066 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021101001220 its reverse (2210010112021), we get a palindrome (14231111113241).

The spelling of 12021101001220 in words is "twelve trillion, twenty-one billion, one hundred one million, one thousand, two hundred twenty".