20201020201021 has 8 divisors (see below), whose sum is σ = 22574976012288. Its totient is φ = 17916647628000.

The previous prime is 20201020201001. The next prime is 20201020201027. The reversal of 20201020201021 is 12010202010202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20201020201021 - 2⁹ = 20201020200509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201020200992 and 20201020201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201020201027) 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, 22395809085 + ... + 22395809986.

It is an arithmetic number, because the mean of its divisors is an integer number (2821872001536).

Almost surely, 2^{20201020201021} is an apocalyptic number.

It is an amenable number.

20201020201021 is a deficient number, since it is larger than the sum of its proper divisors (2373955811267).

20201020201021 is a wasteful number, since it uses less digits than its factorization.

20201020201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44791619123.

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

Adding to 20201020201021 its reverse (12010202010202), we get a palindrome (32211222211223).

The spelling of 20201020201021 in words is "twenty trillion, two hundred one billion, twenty million, two hundred one thousand, twenty-one".