11111010101011 has 2 divisors, whose sum is σ = 11111010101012. Its totient is φ = 11111010101010.

The previous prime is 11111010100969. The next prime is 11111010101027. The reversal of 11111010101011 is 11010101011111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111010101011 - 2²³ = 11111001712403 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111016101011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555505050505 + 5555505050506.

It is an arithmetic number, because the mean of its divisors is an integer number (5555505050506).

Almost surely, 2^{11111010101011} is an apocalyptic number.

11111010101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111010101011 is an equidigital number, since it uses as much as digits as its factorization.

11111010101011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 11111010101011 its reverse (11010101011111), we get a palindrome (22121111112122).

It can be divided in two parts, 111 and 11010101011, that multiplied together give a palindrome (1222121212221).

The spelling of 11111010101011 in words is "eleven trillion, one hundred eleven billion, ten million, one hundred one thousand, eleven".