11000221022221 has 4 divisors (see below), whose sum is σ = 11478491501472. Its totient is φ = 10521950542972.

The previous prime is 11000221022213. The next prime is 11000221022251. The reversal of 11000221022221 is 12222012200011.

It is a happy number.

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 not a de Polignac number, because 11000221022221 - 2³ = 11000221022213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11000221022195 and 11000221022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000221022251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239135239591 + ... + 239135239636.

It is an arithmetic number, because the mean of its divisors is an integer number (2869622875368).

Almost surely, 2^{11000221022221} is an apocalyptic number.

It is an amenable number.

11000221022221 is a deficient number, since it is larger than the sum of its proper divisors (478270479251).

11000221022221 is an equidigital number, since it uses as much as digits as its factorization.

11000221022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478270479250.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11000221022221 its reverse (12222012200011), we get a palindrome (23222233222232).

The spelling of 11000221022221 in words is "eleven trillion, two hundred twenty-one million, twenty-two thousand, two hundred twenty-one".