11201020021211 has 4 divisors (see below), whose sum is σ = 11201031848832. Its totient is φ = 11201008193592.

The previous prime is 11201020021183. The next prime is 11201020021223. The reversal of 11201020021211 is 11212002010211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201020021211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11203020021211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4356596 + ... + 6432881.

It is an arithmetic number, because the mean of its divisors is an integer number (2800257962208).

Almost surely, 2^{11201020021211} is an apocalyptic number.

11201020021211 is a deficient number, since it is larger than the sum of its proper divisors (11827621).

11201020021211 is a wasteful number, since it uses less digits than its factorization.

11201020021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11827620.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11201020021211 its reverse (11212002010211), we get a palindrome (22413022031422).

The spelling of 11201020021211 in words is "eleven trillion, two hundred one billion, twenty million, twenty-one thousand, two hundred eleven".