20112021222220 has 96 divisors (see below), whose sum is σ = 43744725319680. Its totient is φ = 7757967947520.

The previous prime is 20112021222211. The next prime is 20112021222253. The reversal of 20112021222220 is 2222212021102.

It is a super-3 number, since 3×20112021222220³ (a number of 41 digits) contains 333 as substring.

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, 3325947237 + ... + 3325953283.

It is an arithmetic number, because the mean of its divisors is an integer number (455674222080).

Almost surely, 2^{20112021222220} is an apocalyptic number.

20112021222220 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 20112021222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21872362659840).

20112021222220 is an abundant number, since it is smaller than the sum of its proper divisors (23632704097460).

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

20112021222220 is a wasteful number, since it uses less digits than its factorization.

20112021222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103 (or 12101 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20112021222220 its reverse (2222212021102), we get a palindrome (22334233243322).

The spelling of 20112021222220 in words is "twenty trillion, one hundred twelve billion, twenty-one million, two hundred twenty-two thousand, two hundred twenty".