11201012210221 has 4 divisors (see below), whose sum is σ = 11202979722012. Its totient is φ = 11199044698432.

The previous prime is 11201012210191. The next prime is 11201012210261. The reversal of 11201012210221 is 12201221010211.

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 7240076366121 + 3960935844100 = 2690739^2 + 1990210^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201012210221 - 2¹⁷ = 11201012079149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201012210195 and 11201012210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201012210261) 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 3 ways as a sum of consecutive naturals, for example, 983747356 + ... + 983758741.

It is an arithmetic number, because the mean of its divisors is an integer number (2800744930503).

Almost surely, 2^{11201012210221} is an apocalyptic number.

It is an amenable number.

11201012210221 is a deficient number, since it is larger than the sum of its proper divisors (1967511791).

11201012210221 is an equidigital number, since it uses as much as digits as its factorization.

11201012210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967511790.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11201012210221 its reverse (12201221010211), we get a palindrome (23402233220432).

The spelling of 11201012210221 in words is "eleven trillion, two hundred one billion, twelve million, two hundred ten thousand, two hundred twenty-one".