201000202100020 has 24 divisors (see below), whose sum is σ = 440452616776704. Its totient is φ = 76904425151136.

The previous prime is 201000202100003. The next prime is 201000202100021. The reversal of 201000202100020 is 20001202000102.

201000202100020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000202100021) 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, 218478480084 + ... + 218478481003.

It is an arithmetic number, because the mean of its divisors is an integer number (18352192365696).

Almost surely, 2^{201000202100020} is an apocalyptic number.

201000202100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000202100020 is an abundant number, since it is smaller than the sum of its proper divisors (239452414676684).

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

201000202100020 is a wasteful number, since it uses less digits than its factorization.

201000202100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436956961119 (or 436956961117 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 201000202100020 its reverse (20001202000102), we get a palindrome (221001404100122).

The spelling of 201000202100020 in words is "two hundred one trillion, two hundred two million, one hundred thousand, twenty".