22020010020020 has 96 divisors (see below), whose sum is σ = 49778417789856. Its totient is φ = 8151754752000.

The previous prime is 22020010020013. The next prime is 22020010020193. The reversal of 22020010020020 is 2002001002022.

It can be written as a sum of positive squares in 16 ways, for example, as 15166148851876 + 6853861168144 = 3894374^2 + 2617988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22020010019983 and 22020010020010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76615304 + ... + 76902176.

It is an arithmetic number, because the mean of its divisors is an integer number (518525185311).

Almost surely, 2^{22020010020020} is an apocalyptic number.

22020010020020 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 22020010020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24889208894928).

22020010020020 is an abundant number, since it is smaller than the sum of its proper divisors (27758407769836).

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

22020010020020 is a wasteful number, since it uses less digits than its factorization.

22020010020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290661 (or 290659 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22020010020020 its reverse (2002001002022), we get a palindrome (24022011022042).

The spelling of 22020010020020 in words is "twenty-two trillion, twenty billion, ten million, twenty thousand, twenty".