201020221120020 has 48 divisors (see below), whose sum is σ = 569638024200000. Its totient is φ = 52959544197376.

The previous prime is 201020221120007. The next prime is 201020221120087. The reversal of 201020221120020 is 20021122020102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20182748145 + ... + 20182758104.

It is an arithmetic number, because the mean of its divisors is an integer number (11867458837500).

Almost surely, 2^{201020221120020} is an apocalyptic number.

201020221120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020221120020 is an abundant number, since it is smaller than the sum of its proper divisors (368617803079980).

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

201020221120020 is a wasteful number, since it uses less digits than its factorization.

201020221120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40365506344 (or 40365506342 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201020221120020 its reverse (20021122020102), we get a palindrome (221041343140122).

The spelling of 201020221120020 in words is "two hundred one trillion, twenty billion, two hundred twenty-one million, one hundred twenty thousand, twenty".