12201021210220 has 24 divisors (see below), whose sum is σ = 25622335204704. Its totient is φ = 4880372167296.

The previous prime is 12201021210151. The next prime is 12201021210223. The reversal of 12201021210220 is 2201212010221.

It is a happy number.

12201021210220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12201021210194 and 12201021210203.

It is not an unprimeable number, because it can be changed into a prime (12201021210223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571849 + ... + 4972831.

It is an arithmetic number, because the mean of its divisors is an integer number (1067597300196).

Almost surely, 2^{12201021210220} is an apocalyptic number.

12201021210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201021210220 is an abundant number, since it is smaller than the sum of its proper divisors (13421313994484).

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

12201021210220 is a wasteful number, since it uses less digits than its factorization.

12201021210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539609 (or 4539607 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12201021210220 its reverse (2201212010221), we get a palindrome (14402233220441).

The spelling of 12201021210220 in words is "twelve trillion, two hundred one billion, twenty-one million, two hundred ten thousand, two hundred twenty".