11001101220221 has 4 divisors (see below), whose sum is σ = 12572687108832. Its totient is φ = 9429515331612.

The previous prime is 11001101220217. The next prime is 11001101220229. The reversal of 11001101220221 is 12202210110011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11001101220221 - 2² = 11001101220217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001101220196 and 11001101220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001101220229) 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, 785792944295 + ... + 785792944308.

It is an arithmetic number, because the mean of its divisors is an integer number (3143171777208).

Almost surely, 2^{11001101220221} is an apocalyptic number.

It is an amenable number.

11001101220221 is a deficient number, since it is larger than the sum of its proper divisors (1571585888611).

11001101220221 is an equidigital number, since it uses as much as digits as its factorization.

11001101220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571585888610.

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

Adding to 11001101220221 its reverse (12202210110011), we get a palindrome (23203311330232).

The spelling of 11001101220221 in words is "eleven trillion, one billion, one hundred one million, two hundred twenty thousand, two hundred twenty-one".