201020101220020 has 12 divisors (see below), whose sum is σ = 422142212562084. Its totient is φ = 80408040488000.

The previous prime is 201020101219991. The next prime is 201020101220039. The reversal of 201020101220020 is 20022101020102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43107602347044 + 157912498872976 = 6565638^2 + 12566324^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025502530481 + ... + 5025502530520.

It is an arithmetic number, because the mean of its divisors is an integer number (35178517713507).

Almost surely, 2^{201020101220020} is an apocalyptic number.

201020101220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020101220020 is an abundant number, since it is smaller than the sum of its proper divisors (221122111342064).

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

201020101220020 is a wasteful number, since it uses less digits than its factorization.

201020101220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051005061010 (or 10051005061008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201020101220020 its reverse (20022101020102), we get a palindrome (221042202240122).

The spelling of 201020101220020 in words is "two hundred one trillion, twenty billion, one hundred one million, two hundred twenty thousand, twenty".