11111122222241 has 2 divisors, whose sum is σ = 11111122222242. Its totient is φ = 11111122222240.

The previous prime is 11111122222181. The next prime is 11111122222253. The reversal of 11111122222241 is 14222222111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11111122222225 + 16 = 3333335^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111122222241 - 2¹⁸ = 11111121960097 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111122272241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555561111120 + 5555561111121.

It is an arithmetic number, because the mean of its divisors is an integer number (5555561111121).

Almost surely, 2^{11111122222241} is an apocalyptic number.

It is an amenable number.

11111122222241 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111122222241 is an equidigital number, since it uses as much as digits as its factorization.

11111122222241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256, while the sum is 23.

Adding to 11111122222241 its reverse (14222222111111), we get a palindrome (25333344333352).

The spelling of 11111122222241 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred forty-one".