201000020100020 has 24 divisors (see below), whose sum is σ = 422718051085344. Its totient is φ = 80282292063776.

The previous prime is 201000020100007. The next prime is 201000020100029. The reversal of 201000020100020 is 20001020000102.

It is a junction number, because it is equal to n+sod(n) for n = 201000020099980 and 201000020100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000020100029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7357234514 + ... + 7357261833.

It is an arithmetic number, because the mean of its divisors is an integer number (17613252128556).

Almost surely, 2^{201000020100020} is an apocalyptic number.

201000020100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000020100020 is an abundant number, since it is smaller than the sum of its proper divisors (221718030985324).

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

201000020100020 is a wasteful number, since it uses less digits than its factorization.

201000020100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14714497039 (or 14714497037 counting only the distinct ones).

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

Adding to 201000020100020 its reverse (20001020000102), we get a palindrome (221001040100122).

The spelling of 201000020100020 in words is "two hundred one trillion, twenty million, one hundred thousand, twenty".