20201011020221 has 16 divisors (see below), whose sum is σ = 20249612650176. Its totient is φ = 20152486800000.

The previous prime is 20201011020191. The next prime is 20201011020227. The reversal of 20201011020221 is 12202011010202.

It is a cyclic number.

It is not a de Polignac number, because 20201011020221 - 2¹⁸ = 20201010758077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201011020196 and 20201011020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201011020227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3175757081 + ... + 3175763441.

It is an arithmetic number, because the mean of its divisors is an integer number (1265600790636).

Almost surely, 2^{20201011020221} is an apocalyptic number.

It is an amenable number.

20201011020221 is a deficient number, since it is larger than the sum of its proper divisors (48601629955).

20201011020221 is a wasteful number, since it uses less digits than its factorization.

20201011020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11324.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20201011020221 its reverse (12202011010202), we get a palindrome (32403022030423).

The spelling of 20201011020221 in words is "twenty trillion, two hundred one billion, eleven million, twenty thousand, two hundred twenty-one".