20031011200020 has 96 divisors (see below), whose sum is σ = 57294134747136. Its totient is φ = 5226677136000.

The previous prime is 20031011200009. The next prime is 20031011200063. The reversal of 20031011200020 is 2000211013002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20031011199969 and 20031011200005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10729095 + ... + 12456945.

It is an arithmetic number, because the mean of its divisors is an integer number (596813903616).

Almost surely, 2^{20031011200020} is an apocalyptic number.

20031011200020 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 20031011200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28647067373568).

20031011200020 is an abundant number, since it is smaller than the sum of its proper divisors (37263123547116).

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

20031011200020 is a wasteful number, since it uses less digits than its factorization.

20031011200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732021 (or 1732019 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20031011200020 its reverse (2000211013002), we get a palindrome (22031222213022).

The spelling of 20031011200020 in words is "twenty trillion, thirty-one billion, eleven million, two hundred thousand, twenty".