11001010011221 has 4 divisors (see below), whose sum is σ = 11151708778572. Its totient is φ = 10850311243872.

The previous prime is 11001010011197. The next prime is 11001010011239. The reversal of 11001010011221 is 12211001010011.

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 3026677870225 + 7974332140996 = 1739735^2 + 2823886^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001010011221 - 2³⁰ = 10999936269397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001010001221) 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, 75349383566 + ... + 75349383711.

It is an arithmetic number, because the mean of its divisors is an integer number (2787927194643).

Almost surely, 2^{11001010011221} is an apocalyptic number.

It is an amenable number.

11001010011221 is a deficient number, since it is larger than the sum of its proper divisors (150698767351).

11001010011221 is an equidigital number, since it uses as much as digits as its factorization.

11001010011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150698767350.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11001010011221 its reverse (12211001010011), we get a palindrome (23212011021232).

The spelling of 11001010011221 in words is "eleven trillion, one billion, ten million, eleven thousand, two hundred twenty-one".