201020101121 has 16 divisors (see below), whose sum is σ = 237920686080. Its totient is φ = 166201586640.

The previous prime is 201020101109. The next prime is 201020101123. The reversal of 201020101121 is 121101020102.

201020101121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 201020101121 - 2¹⁴ = 201020084737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201020101123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1442111 + ... + 1575348.

It is an arithmetic number, because the mean of its divisors is an integer number (14870042880).

Almost surely, 2^201020101121 is an apocalyptic number.

It is an amenable number.

201020101121 is a deficient number, since it is larger than the sum of its proper divisors (36900584959).

201020101121 is a wasteful number, since it uses less digits than its factorization.

201020101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017804.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201020101121 its reverse (121101020102), we get a palindrome (322121121223).

The spelling of 201020101121 in words is "two hundred one billion, twenty million, one hundred one thousand, one hundred twenty-one".