11201021001121 has 24 divisors (see below), whose sum is σ = 13121161347840. Its totient is φ = 9533743081632.

The previous prime is 11201021001091. The next prime is 11201021001127. The reversal of 11201021001121 is 12110012010211.

It is a happy number.

It is not a de Polignac number, because 11201021001121 - 2¹¹ = 11201020999073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11201021001127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3046990 + ... + 5629048.

It is an arithmetic number, because the mean of its divisors is an integer number (546715056160).

Almost surely, 2^{11201021001121} is an apocalyptic number.

It is an amenable number.

11201021001121 is a deficient number, since it is larger than the sum of its proper divisors (1920140346719).

11201021001121 is a wasteful number, since it uses less digits than its factorization.

11201021001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582693 (or 2582686 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11201021001121 its reverse (12110012010211), we get a palindrome (23311033011332).

The spelling of 11201021001121 in words is "eleven trillion, two hundred one billion, twenty-one million, one thousand, one hundred twenty-one".