1111211211241 has 2 divisors, whose sum is σ = 1111211211242. Its totient is φ = 1111211211240.

The previous prime is 1111211211199. The next prime is 1111211211277. The reversal of 1111211211241 is 1421121121111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556074455616 + 555136755625 = 745704^2 + 745075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111211211241 - 2⁷ = 1111211211113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111211211281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555605605620 + 555605605621.

It is an arithmetic number, because the mean of its divisors is an integer number (555605605621).

Almost surely, 2^{1111211211241} is an apocalyptic number.

It is an amenable number.

1111211211241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111211211241 is an equidigital number, since it uses as much as digits as its factorization.

1111211211241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32, while the sum is 19.

Adding to 1111211211241 its reverse (1421121121111), we get a palindrome (2532332332352).

The spelling of 1111211211241 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred eleven thousand, two hundred forty-one".