201010210100020 has 96 divisors (see below), whose sum is σ = 434083637223936. Its totient is φ = 78140781388800.

The previous prime is 201010210099999. The next prime is 201010210100153. The reversal of 201010210100020 is 20001012010102.

201010210100020 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1421470639 + ... + 1421612041.

It is an arithmetic number, because the mean of its divisors is an integer number (4521704554416).

Almost surely, 2^{201010210100020} is an apocalyptic number.

201010210100020 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 201010210100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217041818611968).

201010210100020 is an abundant number, since it is smaller than the sum of its proper divisors (233073427123916).

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

201010210100020 is a wasteful number, since it uses less digits than its factorization.

201010210100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148121 (or 148119 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201010210100020 its reverse (20001012010102), we get a palindrome (221011222110122).

The spelling of 201010210100020 in words is "two hundred one trillion, ten billion, two hundred ten million, one hundred thousand, twenty".