11111110101011 has 4 divisors (see below), whose sum is σ = 11116144588992. Its totient is φ = 11106075613032.

The previous prime is 11111110100939. The next prime is 11111110101043. The reversal of 11111110101011 is 11010101111111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11111110101011 - 2⁴² = 6713063589907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111110100983 and 11111110101001.

It is not an unprimeable number, because it can be changed into a prime (11111110101071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2517240680 + ... + 2517245093.

It is an arithmetic number, because the mean of its divisors is an integer number (2779036147248).

Almost surely, 2^{11111110101011} is an apocalyptic number.

11111110101011 is a deficient number, since it is larger than the sum of its proper divisors (5034487981).

11111110101011 is an equidigital number, since it uses as much as digits as its factorization.

11111110101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034487980.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 11111110101011 its reverse (11010101111111), we get a palindrome (22121211212122).

It can be divided in two parts, 11111 and 110101011, that multiplied together give a palindrome (1223332333221).

The spelling of 11111110101011 in words is "eleven trillion, one hundred eleven billion, one hundred ten million, one hundred one thousand, eleven".