111210111011 has 2 divisors, whose sum is σ = 111210111012. Its totient is φ = 111210111010.

The previous prime is 111210111007. The next prime is 111210111013. The reversal of 111210111011 is 110111012111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (110111012111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111210111011 - 2² = 111210111007 is a prime.

It is a Sophie Germain prime.

Together with 111210111013, 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 = 111210110983 and 111210111001.

It is not a weakly prime, because it can be changed into another prime (111210111013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605055505 + 55605055506.

It is an arithmetic number, because the mean of its divisors is an integer number (55605055506).

Almost surely, 2^111210111011 is an apocalyptic number.

111210111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210111011 is an equidigital number, since it uses as much as digits as its factorization.

111210111011 is an evil number, because the sum of its binary digits is even.

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

Adding to 111210111011 its reverse (110111012111), we get a palindrome (221321123122).

The spelling of 111210111011 in words is "one hundred eleven billion, two hundred ten million, one hundred eleven thousand, eleven".