11221201110221 has 8 divisors (see below), whose sum is σ = 11405264042424. Its totient is φ = 11037141688320.

The previous prime is 11221201110209. The next prime is 11221201110263. The reversal of 11221201110221 is 12201110212211.

It can be written as a sum of positive squares in 4 ways, for example, as 1461112825225 + 9760088284996 = 1208765^2 + 3124114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221201110221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221201110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221201110121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6007565 + ... + 7650701.

It is an arithmetic number, because the mean of its divisors is an integer number (1425658005303).

Almost surely, 2^{11221201110221} is an apocalyptic number.

It is an amenable number.

11221201110221 is a deficient number, since it is larger than the sum of its proper divisors (184062932203).

11221201110221 is a wasteful number, since it uses less digits than its factorization.

11221201110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755151.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221201110221 its reverse (12201110212211), we get a palindrome (23422311322432).

The spelling of 11221201110221 in words is "eleven trillion, two hundred twenty-one billion, two hundred one million, one hundred ten thousand, two hundred twenty-one".