22222002222020 has 12 divisors (see below), whose sum is σ = 46666204666284. Its totient is φ = 8888800888800.

The previous prime is 22222002221989. The next prime is 22222002222047. The reversal of 22222002222020 is 2022220022222.

It can be written as a sum of positive squares in 2 ways, for example, as 7359620231044 + 14862381990976 = 2712862^2 + 3855176^2 .

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: 1111100111101 = 22222002222020 / (2 + 2 + 2 + 2 + 2 + 0 + 0 + 2 + 2 + 2 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 22222002221983 and 22222002222001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555550055531 + ... + 555550055570.

It is an arithmetic number, because the mean of its divisors is an integer number (3888850388857).

Almost surely, 2^{22222002222020} is an apocalyptic number.

22222002222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222002222020 is an abundant number, since it is smaller than the sum of its proper divisors (24444202444264).

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

22222002222020 is a wasteful number, since it uses less digits than its factorization.

22222002222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111100111110 (or 1111100111108 counting only the distinct ones).

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

Adding to 22222002222020 its reverse (2022220022222), we get a palindrome (24244222244242).

The spelling of 22222002222020 in words is "twenty-two trillion, two hundred twenty-two billion, two million, two hundred twenty-two thousand, twenty".