20001110210020 has 12 divisors (see below), whose sum is σ = 42002331441084. Its totient is φ = 8000444084000.

The previous prime is 20001110210017. The next prime is 20001110210089. The reversal of 20001110210020 is 2001201110002.

It can be written as a sum of positive squares in 2 ways, for example, as 6716266163776 + 13284844046244 = 2591576^2 + 3644838^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20001110209979 and 20001110210006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500027755231 + ... + 500027755270.

It is an arithmetic number, because the mean of its divisors is an integer number (3500194286757).

Almost surely, 2^{20001110210020} is an apocalyptic number.

20001110210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001110210020 is an abundant number, since it is smaller than the sum of its proper divisors (22001221231064).

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

20001110210020 is a wasteful number, since it uses less digits than its factorization.

20001110210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000055510510 (or 1000055510508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20001110210020 its reverse (2001201110002), we get a palindrome (22002311320022).

The spelling of 20001110210020 in words is "twenty trillion, one billion, one hundred ten million, two hundred ten thousand, twenty".