11201020121021 has 16 divisors (see below), whose sum is σ = 11938349666304. Its totient is φ = 10484614220784.

The previous prime is 11201020121003. The next prime is 11201020121047. The reversal of 11201020121021 is 12012102010211.

It is not a de Polignac number, because 11201020121021 - 2¹⁰ = 11201020119997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201020120987 and 11201020121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201020120021) 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, 7161560 + ... + 8584286.

It is an arithmetic number, because the mean of its divisors is an integer number (746146854144).

Almost surely, 2^{11201020121021} is an apocalyptic number.

It is an amenable number.

11201020121021 is a deficient number, since it is larger than the sum of its proper divisors (737329545283).

11201020121021 is a wasteful number, since it uses less digits than its factorization.

11201020121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430080.

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

Adding to 11201020121021 its reverse (12012102010211), we get a palindrome (23213122131232).

The spelling of 11201020121021 in words is "eleven trillion, two hundred one billion, twenty million, one hundred twenty-one thousand, twenty-one".