11021102212221 has 8 divisors (see below), whose sum is σ = 16327558832960. Its totient is φ = 7347401474796.

The previous prime is 11021102212199. The next prime is 11021102212229. The reversal of 11021102212221 is 12221220112011.

11021102212221 is a `hidden beast` number, since 1 + 10 + 211 + 0 + 221 + 2 + 221 = 666.

It is not a de Polignac number, because 11021102212221 - 2⁹ = 11021102211709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021102212194 and 11021102212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021102212229) 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, 204094485385 + ... + 204094485438.

It is an arithmetic number, because the mean of its divisors is an integer number (2040944854120).

Almost surely, 2^{11021102212221} is an apocalyptic number.

It is an amenable number.

11021102212221 is a deficient number, since it is larger than the sum of its proper divisors (5306456620739).

11021102212221 is an equidigital number, since it uses as much as digits as its factorization.

11021102212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408188970832 (or 408188970826 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11021102212221 its reverse (12221220112011), we get a palindrome (23242322324232).

The spelling of 11021102212221 in words is "eleven trillion, twenty-one billion, one hundred two million, two hundred twelve thousand, two hundred twenty-one".