20201220022220 has 24 divisors (see below), whose sum is σ = 42422646765408. Its totient is φ = 8080471872000.

The previous prime is 20201220022177. The next prime is 20201220022271. The reversal of 20201220022220 is 2222002210202.

It is a super-2 number, since 2×20201220022220² (a number of 27 digits) contains 22 as substring.

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, 17936540 + ... + 19029500.

It is an arithmetic number, because the mean of its divisors is an integer number (1767610281892).

Almost surely, 2^{20201220022220} is an apocalyptic number.

20201220022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201220022220 is an abundant number, since it is smaller than the sum of its proper divisors (22221426743188).

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

20201220022220 is a wasteful number, since it uses less digits than its factorization.

20201220022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017121 (or 2017119 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20201220022220 its reverse (2222002210202), we get a palindrome (22423222232422).

The spelling of 20201220022220 in words is "twenty trillion, two hundred one billion, two hundred twenty million, twenty-two thousand, two hundred twenty".