11021100220121 has 2 divisors, whose sum is σ = 11021100220122. Its totient is φ = 11021100220120.

The previous prime is 11021100220069. The next prime is 11021100220181. The reversal of 11021100220121 is 12102200112011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6704013602521 + 4317086617600 = 2589211^2 + 2077760^2 .

It is an emirp because it is prime and its reverse (12102200112011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021100220121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021100220096 and 11021100220105.

It is not a weakly prime, because it can be changed into another prime (11021100220181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510550110060 + 5510550110061.

It is an arithmetic number, because the mean of its divisors is an integer number (5510550110061).

Almost surely, 2^{11021100220121} is an apocalyptic number.

It is an amenable number.

11021100220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021100220121 is an equidigital number, since it uses as much as digits as its factorization.

11021100220121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11021100220121 its reverse (12102200112011), we get a palindrome (23123300332132).

The spelling of 11021100220121 in words is "eleven trillion, twenty-one billion, one hundred million, two hundred twenty thousand, one hundred twenty-one".