10221120121220 has 24 divisors (see below), whose sum is σ = 21784715723904. Its totient is φ = 4027426435296.

The previous prime is 10221120121169. The next prime is 10221120121237. The reversal of 10221120121220 is 2212102112201.

10221120121220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3813849452 + ... + 3813852131.

It is an arithmetic number, because the mean of its divisors is an integer number (907696488496).

Almost surely, 2^{10221120121220} is an apocalyptic number.

10221120121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221120121220 is an abundant number, since it is smaller than the sum of its proper divisors (11563595602684).

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

10221120121220 is a wasteful number, since it uses less digits than its factorization.

10221120121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7627701659 (or 7627701657 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10221120121220 its reverse (2212102112201), we get a palindrome (12433222233421).

The spelling of 10221120121220 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty".