201020021211121 has 16 divisors (see below), whose sum is σ = 239082247031040. Its totient is φ = 165365220807360.

The previous prime is 201020021211101. The next prime is 201020021211157. The reversal of 201020021211121 is 121112120020102.

It is not a de Polignac number, because 201020021211121 - 2⁵ = 201020021211089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201020021211095 and 201020021211104.

It is not an unprimeable number, because it can be changed into a prime (201020021211101) 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, 2964775710 + ... + 2964843511.

It is an arithmetic number, because the mean of its divisors is an integer number (14942640439440).

Almost surely, 2^{201020021211121} is an apocalyptic number.

It is an amenable number.

201020021211121 is a deficient number, since it is larger than the sum of its proper divisors (38062225819919).

201020021211121 is a wasteful number, since it uses less digits than its factorization.

201020021211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929619424.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201020021211121 its reverse (121112120020102), we get a palindrome (322132141231223).

The spelling of 201020021211121 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred eleven thousand, one hundred twenty-one".