20200101120020 has 12 divisors (see below), whose sum is σ = 42420212352084. Its totient is φ = 8080040448000.

The previous prime is 20200101120019. The next prime is 20200101120071. The reversal of 20200101120020 is 2002110100202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13227448945936 + 6972652174084 = 3636956^2 + 2640578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20200101119983 and 20200101120010.

It is a congruent number.

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, 505002527981 + ... + 505002528020.

It is an arithmetic number, because the mean of its divisors is an integer number (3535017696007).

Almost surely, 2^{20200101120020} is an apocalyptic number.

20200101120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200101120020 is an abundant number, since it is smaller than the sum of its proper divisors (22220111232064).

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

20200101120020 is a wasteful number, since it uses less digits than its factorization.

20200101120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010005056010 (or 1010005056008 counting only the distinct ones).

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

Adding to 20200101120020 its reverse (2002110100202), we get a palindrome (22202211220222).

The spelling of 20200101120020 in words is "twenty trillion, two hundred billion, one hundred one million, one hundred twenty thousand, twenty".