11201002121021 has 4 divisors (see below), whose sum is σ = 11587243573500. Its totient is φ = 10814760668544.

The previous prime is 11201002121009. The next prime is 11201002121027. The reversal of 11201002121021 is 12012120010211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4767296695396 + 6433705425625 = 2183414^2 + 2536475^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201002121021 - 2¹⁸ = 11201001858877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201002120987 and 11201002121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201002121027) 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, 193120726196 + ... + 193120726253.

It is an arithmetic number, because the mean of its divisors is an integer number (2896810893375).

Almost surely, 2^{11201002121021} is an apocalyptic number.

It is an amenable number.

11201002121021 is a deficient number, since it is larger than the sum of its proper divisors (386241452479).

11201002121021 is an equidigital number, since it uses as much as digits as its factorization.

11201002121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386241452478.

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

Adding to 11201002121021 its reverse (12012120010211), we get a palindrome (23213122131232).

The spelling of 11201002121021 in words is "eleven trillion, two hundred one billion, two million, one hundred twenty-one thousand, twenty-one".