20222220222020 has 12 divisors (see below), whose sum is σ = 42466662466284. Its totient is φ = 8088888088800.

The previous prime is 20222220221999. The next prime is 20222220222023. The reversal of 20222220222020 is 2022202222202.

It can be written as a sum of positive squares in 2 ways, for example, as 11738736801856 + 8483483420164 = 3426184^2 + 2912642^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1011111011101 = 20222220222020 / (2 + 0 + 2 + 2 + 2 + 2 + 2 + 0 + 2 + 2 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 20222220221983 and 20222220222001.

It is not an unprimeable number, because it can be changed into a prime (20222220222023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505555505531 + ... + 505555505570.

It is an arithmetic number, because the mean of its divisors is an integer number (3538888538857).

Almost surely, 2^{20222220222020} is an apocalyptic number.

20222220222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222220222020 is an abundant number, since it is smaller than the sum of its proper divisors (22244442244264).

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

20222220222020 is a wasteful number, since it uses less digits than its factorization.

20222220222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011111011110 (or 1011111011108 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20222220222020 its reverse (2022202222202), we get a palindrome (22244422444222).

The spelling of 20222220222020 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twenty-two thousand, twenty".