20112020010020 has 48 divisors (see below), whose sum is σ = 43692964585200. Its totient is φ = 7767163514880.

The previous prime is 20112020009959. The next prime is 20112020010029. The reversal of 20112020010020 is 2001002021102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1697433756736 + 18414586253284 = 1302856^2 + 4291222^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20112020009983 and 20112020010010.

It is not an unprimeable number, because it can be changed into a prime (20112020010029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19096400 + ... + 20122040.

It is an arithmetic number, because the mean of its divisors is an integer number (910270095525).

Almost surely, 2^{20112020010020} is an apocalyptic number.

20112020010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112020010020 is an abundant number, since it is smaller than the sum of its proper divisors (23580944575180).

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

20112020010020 is a wasteful number, since it uses less digits than its factorization.

20112020010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059488 (or 1059486 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20112020010020 its reverse (2001002021102), we get a palindrome (22113022031122).

The spelling of 20112020010020 in words is "twenty trillion, one hundred twelve billion, twenty million, ten thousand, twenty".