11111126121211 has 2 divisors, whose sum is σ = 11111126121212. Its totient is φ = 11111126121210.

The previous prime is 11111126121197. The next prime is 11111126121259. The reversal of 11111126121211 is 11212162111111.

It is a m-pointer prime, because the next prime (11111126121259) can be obtained adding 11111126121211 to its product of digits (48).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111126121211 - 2²⁷ = 11110991903483 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111126101211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555563060605 + 5555563060606.

It is an arithmetic number, because the mean of its divisors is an integer number (5555563060606).

Almost surely, 2^{11111126121211} is an apocalyptic number.

11111126121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111126121211 is an equidigital number, since it uses as much as digits as its factorization.

11111126121211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 22.

Adding to 11111126121211 its reverse (11212162111111), we get a palindrome (22323288232322).

The spelling of 11111126121211 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-six million, one hundred twenty-one thousand, two hundred eleven".