11220022022221 has 2 divisors, whose sum is σ = 11220022022222. Its totient is φ = 11220022022220.

The previous prime is 11220022022201. The next prime is 11220022022239. The reversal of 11220022022221 is 12222022002211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9262807032196 + 1957214990025 = 3043486^2 + 1399005^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220022022221 - 2¹¹ = 11220022020173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220022022201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610011011110 + 5610011011111.

It is an arithmetic number, because the mean of its divisors is an integer number (5610011011111).

Almost surely, 2^{11220022022221} is an apocalyptic number.

It is an amenable number.

11220022022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220022022221 is an equidigital number, since it uses as much as digits as its factorization.

11220022022221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 11220022022221 its reverse (12222022002211), we get a palindrome (23442044024432).

The spelling of 11220022022221 in words is "eleven trillion, two hundred twenty billion, twenty-two million, twenty-two thousand, two hundred twenty-one".