20022121210220 has 96 divisors (see below), whose sum is σ = 44160053648256. Its totient is φ = 7610803200000.

The previous prime is 20022121210081. The next prime is 20022121210229. The reversal of 20022121210220 is 2201212122002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20022121210229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715036220 + ... + 715064220.

It is an arithmetic number, because the mean of its divisors is an integer number (460000558836).

Almost surely, 2^{20022121210220} is an apocalyptic number.

20022121210220 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 20022121210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22080026824128).

20022121210220 is an abundant number, since it is smaller than the sum of its proper divisors (24137932438036).

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

20022121210220 is a wasteful number, since it uses less digits than its factorization.

20022121210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38091 (or 38089 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20022121210220 its reverse (2201212122002), we get a palindrome (22223333332222).

The spelling of 20022121210220 in words is "twenty trillion, twenty-two billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty".