11121121222711 has 2 divisors, whose sum is σ = 11121121222712. Its totient is φ = 11121121222710.

The previous prime is 11121121222669. The next prime is 11121121222727. The reversal of 11121121222711 is 11722212112111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121121222711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121121222781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560560611355 + 5560560611356.

It is an arithmetic number, because the mean of its divisors is an integer number (5560560611356).

Almost surely, 2^{11121121222711} is an apocalyptic number.

11121121222711 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121121222711 is an equidigital number, since it uses as much as digits as its factorization.

11121121222711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 25.

Adding to 11121121222711 its reverse (11722212112111), we get a palindrome (22843333334822).

The spelling of 11121121222711 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-two thousand, seven hundred eleven".