20210021222020 has 96 divisors (see below), whose sum is σ = 49187551666176. Its totient is φ = 6832076544000.

The previous prime is 20210021221909. The next prime is 20210021222057. The reversal of 20210021222020 is 2022212001202.

It is a junction number, because it is equal to n+sod(n) for n = 20210021221985 and 20210021222003.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442429 + ... + 6373051.

It is an arithmetic number, because the mean of its divisors is an integer number (512370329856).

Almost surely, 2^{20210021222020} is an apocalyptic number.

20210021222020 is a gapful number since it is divisible by the number (20) 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 20210021222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24593775833088).

20210021222020 is an abundant number, since it is smaller than the sum of its proper divisors (28977530444156).

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

20210021222020 is a wasteful number, since it uses less digits than its factorization.

20210021222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5930981 (or 5930979 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20210021222020 its reverse (2022212001202), we get a palindrome (22232233223222).

The spelling of 20210021222020 in words is "twenty trillion, two hundred ten billion, twenty-one million, two hundred twenty-two thousand, twenty".