20200001200020 has 72 divisors (see below), whose sum is σ = 63937395115776. Its totient is φ = 5152464073152.

The previous prime is 20200001200013. The next prime is 20200001200021. The reversal of 20200001200020 is 2000210000202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20200001199975 and 20200001200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200001200021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2439609532 + ... + 2439617811.

It is an arithmetic number, because the mean of its divisors is an integer number (888019376608).

Almost surely, 2^{20200001200020} is an apocalyptic number.

20200001200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200001200020 is an abundant number, since it is smaller than the sum of its proper divisors (43737393915756).

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

20200001200020 is a wasteful number, since it uses less digits than its factorization.

20200001200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879227381 (or 4879227376 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20200001200020 its reverse (2000210000202), we get a palindrome (22200211200222).

The spelling of 20200001200020 in words is "twenty trillion, two hundred billion, one million, two hundred thousand, twenty".