11200220221 has 2 divisors, whose sum is σ = 11200220222. Its totient is φ = 11200220220.

The previous prime is 11200220189. The next prime is 11200220233. The reversal of 11200220221 is 12202200211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10437687225 + 762532996 = 102165^2 + 27614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200220221 - 2⁵ = 11200220189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11200230221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600110110 + 5600110111.

It is an arithmetic number, because the mean of its divisors is an integer number (5600110111).

Almost surely, 2^11200220221 is an apocalyptic number.

It is an amenable number.

11200220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200220221 is an equidigital number, since it uses as much as digits as its factorization.

11200220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11200220221 its reverse (12202200211), we get a palindrome (23402420432).

The spelling of 11200220221 in words is "eleven billion, two hundred million, two hundred twenty thousand, two hundred twenty-one".