11001203100221 has 4 divisors (see below), whose sum is σ = 11015659346844. Its totient is φ = 10986746853600.

The previous prime is 11001203100211. The next prime is 11001203100241. The reversal of 11001203100221 is 12200130210011.

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 126015060196 + 10875188040025 = 354986^2 + 3297755^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001203100221 - 2²⁶ = 11001135991357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001203100196 and 11001203100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001203100211) 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, 7228122170 + ... + 7228123691.

It is an arithmetic number, because the mean of its divisors is an integer number (2753914836711).

Almost surely, 2^{11001203100221} is an apocalyptic number.

It is an amenable number.

11001203100221 is a deficient number, since it is larger than the sum of its proper divisors (14456246623).

11001203100221 is an equidigital number, since it uses as much as digits as its factorization.

11001203100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14456246622.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11001203100221 its reverse (12200130210011), we get a palindrome (23201333310232).

The spelling of 11001203100221 in words is "eleven trillion, one billion, two hundred three million, one hundred thousand, two hundred twenty-one".