111112011011 has 2 divisors, whose sum is σ = 111112011012. Its totient is φ = 111112011010.

The previous prime is 111112010987. The next prime is 111112011013. The reversal of 111112011011 is 110110211111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111112011011 - 2²² = 111107816707 is a prime.

Together with 111112011013, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111112010983 and 111112011001.

It is not a weakly prime, because it can be changed into another prime (111112011013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556005505 + 55556005506.

It is an arithmetic number, because the mean of its divisors is an integer number (55556005506).

Almost surely, 2^111112011011 is an apocalyptic number.

111112011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112011011 is an equidigital number, since it uses as much as digits as its factorization.

111112011011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111112011011 its reverse (110110211111), we get a palindrome (221222222122).

The spelling of 111112011011 in words is "one hundred eleven billion, one hundred twelve million, eleven thousand, eleven".