11222012310221 has 2 divisors, whose sum is σ = 11222012310222. Its totient is φ = 11222012310220.

The previous prime is 11222012310217. The next prime is 11222012310227. The reversal of 11222012310221 is 12201321022211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9537504241225 + 1684508068996 = 3088285^2 + 1297886^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222012310221 - 2² = 11222012310217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11222012310193 and 11222012310202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222012310227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611006155110 + 5611006155111.

It is an arithmetic number, because the mean of its divisors is an integer number (5611006155111).

Almost surely, 2^{11222012310221} is an apocalyptic number.

It is an amenable number.

11222012310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222012310221 is an equidigital number, since it uses as much as digits as its factorization.

11222012310221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11222012310221 its reverse (12201321022211), we get a palindrome (23423333332432).

The spelling of 11222012310221 in words is "eleven trillion, two hundred twenty-two billion, twelve million, three hundred ten thousand, two hundred twenty-one".