10221201122020 has 192 divisors, whose sum is σ = 24915629652480. Its totient is φ = 3449961934848.

The previous prime is 10221201121969. The next prime is 10221201122047. The reversal of 10221201122020 is 2022110212201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10221201121985 and 10221201122003.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1695336366 + ... + 1695342394.

It is an arithmetic number, because the mean of its divisors is an integer number (129768904440).

Almost surely, 2^{10221201122020} is an apocalyptic number.

10221201122020 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 10221201122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12457814826240).

10221201122020 is an abundant number, since it is smaller than the sum of its proper divisors (14694428530460).

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

10221201122020 is a wasteful number, since it uses less digits than its factorization.

10221201122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902 (or 6900 counting only the distinct ones).

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

Adding to 10221201122020 its reverse (2022110212201), we get a palindrome (12243311334221).

The spelling of 10221201122020 in words is "ten trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, twenty".