11021020200221 has 2 divisors, whose sum is σ = 11021020200222. Its totient is φ = 11021020200220.

The previous prime is 11021020200191. The next prime is 11021020200293. The reversal of 11021020200221 is 12200202012011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9978965102500 + 1042055097721 = 3158950^2 + 1020811^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021020200221 - 2³⁰ = 11019946458397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021020200196 and 11021020200205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021020200721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510510100110 + 5510510100111.

It is an arithmetic number, because the mean of its divisors is an integer number (5510510100111).

Almost surely, 2^{11021020200221} is an apocalyptic number.

It is an amenable number.

11021020200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021020200221 is an equidigital number, since it uses as much as digits as its factorization.

11021020200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11021020200221 its reverse (12200202012011), we get a palindrome (23221222212232).

The spelling of 11021020200221 in words is "eleven trillion, twenty-one billion, twenty million, two hundred thousand, two hundred twenty-one".