11201020202021 has 16 divisors (see below), whose sum is σ = 12082066819200. Its totient is φ = 10322755103808.

The previous prime is 11201020201993. The next prime is 11201020202023. The reversal of 11201020202021 is 12020202010211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201020202021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201020201987 and 11201020202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201020202023) 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, 46952240 + ... + 47190198.

It is an arithmetic number, because the mean of its divisors is an integer number (755129176200).

Almost surely, 2^{11201020202021} is an apocalyptic number.

It is an amenable number.

11201020202021 is a deficient number, since it is larger than the sum of its proper divisors (881046617179).

11201020202021 is a wasteful number, since it uses less digits than its factorization.

11201020202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243788.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11201020202021 its reverse (12020202010211), we get a palindrome (23221222212232).

The spelling of 11201020202021 in words is "eleven trillion, two hundred one billion, twenty million, two hundred two thousand, twenty-one".