11001320221 has 8 divisors (see below), whose sum is σ = 11238094080. Its totient is φ = 10764659088.

The previous prime is 11001320219. The next prime is 11001320237. The reversal of 11001320221 is 12202310011.

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

It is a cyclic number.

It is not a de Polignac number, because 11001320221 - 2¹ = 11001320219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001320821) 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, 186495 + ... + 238291.

It is an arithmetic number, because the mean of its divisors is an integer number (1404761760).

Almost surely, 2^11001320221 is an apocalyptic number.

It is an amenable number.

11001320221 is a deficient number, since it is larger than the sum of its proper divisors (236773859).

11001320221 is an equidigital number, since it uses as much as digits as its factorization.

11001320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56363.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11001320221 its reverse (12202310011), we get a palindrome (23203630232).

The spelling of 11001320221 in words is "eleven billion, one million, three hundred twenty thousand, two hundred twenty-one".