11131121111711 has 2 divisors, whose sum is σ = 11131121111712. Its totient is φ = 11131121111710.

The previous prime is 11131121111657. The next prime is 11131121111753. The reversal of 11131121111711 is 11711112113111.

11131121111711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a m-pointer prime, because the next prime (11131121111753) can be obtained adding 11131121111711 to its product of digits (42).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11131121111711 - 2¹⁸ = 11131120849567 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11131121111111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565560555855 + 5565560555856.

It is an arithmetic number, because the mean of its divisors is an integer number (5565560555856).

Almost surely, 2^{11131121111711} is an apocalyptic number.

11131121111711 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131121111711 is an equidigital number, since it uses as much as digits as its factorization.

11131121111711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 23.

Adding to 11131121111711 its reverse (11711112113111), we get a palindrome (22842233224822).

The spelling of 11131121111711 in words is "eleven trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred eleven thousand, seven hundred eleven".