11021101100221 has 4 divisors (see below), whose sum is σ = 11021181889500. Its totient is φ = 11021020310944.

The previous prime is 11021101100213. The next prime is 11021101100227. The reversal of 11021101100221 is 12200110112011.

It is a happy number.

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 10413303111225 + 607797988996 = 3226965^2 + 779614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021101100221 - 2³ = 11021101100213 is a prime.

It is a super-2 number, since 2×11021101100221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021101100227) 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, 40189666 + ... + 40462963.

It is an arithmetic number, because the mean of its divisors is an integer number (2755295472375).

Almost surely, 2^{11021101100221} is an apocalyptic number.

It is an amenable number.

11021101100221 is a deficient number, since it is larger than the sum of its proper divisors (80789279).

11021101100221 is an equidigital number, since it uses as much as digits as its factorization.

11021101100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80789278.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11021101100221 its reverse (12200110112011), we get a palindrome (23221211212232).

The spelling of 11021101100221 in words is "eleven trillion, twenty-one billion, one hundred one million, one hundred thousand, two hundred twenty-one".