201021210010020 has 24 divisors (see below), whose sum is σ = 562859388028224. Its totient is φ = 53605656002656.

The previous prime is 201021210010001. The next prime is 201021210010037. The reversal of 201021210010020 is 20010012120102.

201021210010020 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 201021210009978 and 201021210010005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675176750024 + ... + 1675176750143.

It is an arithmetic number, because the mean of its divisors is an integer number (23452474501176).

Almost surely, 2^{201021210010020} is an apocalyptic number.

201021210010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021210010020 is an abundant number, since it is smaller than the sum of its proper divisors (361838178018204).

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

201021210010020 is a wasteful number, since it uses less digits than its factorization.

201021210010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350353500179 (or 3350353500177 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201021210010020 its reverse (20010012120102), we get a palindrome (221031222130122).

The spelling of 201021210010020 in words is "two hundred one trillion, twenty-one billion, two hundred ten million, ten thousand, twenty".