201020202120211 has 24 divisors (see below), whose sum is σ = 207870654931520. Its totient is φ = 194327811804672.

The previous prime is 201020202120169. The next prime is 201020202120229. The reversal of 201020202120211 is 112021202020102.

It is a happy number.

It is not a de Polignac number, because 201020202120211 - 2³⁵ = 200985842381843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201020203120211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107312245 + ... + 109169401.

Almost surely, 2^{201020202120211} is an apocalyptic number.

201020202120211 is a deficient number, since it is larger than the sum of its proper divisors (6850452811309).

201020202120211 is an equidigital number, since it uses as much as digits as its factorization.

201020202120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857583 (or 1857446 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201020202120211 its reverse (112021202020102), we get a palindrome (313041404140313).

The spelling of 201020202120211 in words is "two hundred one trillion, twenty billion, two hundred two million, one hundred twenty thousand, two hundred eleven".