11220211061 has 2 divisors, whose sum is σ = 11220211062. Its totient is φ = 11220211060.

The previous prime is 11220211007. The next prime is 11220211069. The reversal of 11220211061 is 16011202211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11210786161 + 9424900 = 105881^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220211061 - 2¹⁴ = 11220194677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220211069) 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, 5610105530 + 5610105531.

It is an arithmetic number, because the mean of its divisors is an integer number (5610105531).

Almost surely, 2^11220211061 is an apocalyptic number.

It is an amenable number.

11220211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220211061 is an equidigital number, since it uses as much as digits as its factorization.

11220211061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11220211061 its reverse (16011202211), we get a palindrome (27231413272).

The spelling of 11220211061 in words is "eleven billion, two hundred twenty million, two hundred eleven thousand, sixty-one".