111123011 has 2 divisors, whose sum is σ = 111123012. Its totient is φ = 111123010.

The previous prime is 111123007. The next prime is 111123013. The reversal of 111123011 is 110321111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (110321111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111123011 - 2² = 111123007 is a prime.

It is a super-2 number, since 2×111123011² = 24696647147412242, which contains 22 as substring.

Together with 111123013, 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 = 111122983 and 111123001.

It is not a weakly prime, because it can be changed into another prime (111123013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561505 + 55561506.

It is an arithmetic number, because the mean of its divisors is an integer number (55561506).

Almost surely, 2^111123011 is an apocalyptic number.

111123011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111123011 is an equidigital number, since it uses as much as digits as its factorization.

111123011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 111123011 is about 10541.4899800740. The cubic root of 111123011 is about 480.7670187661.

Adding to 111123011 its reverse (110321111), we get a palindrome (221444122).

The spelling of 111123011 in words is "one hundred eleven million, one hundred twenty-three thousand, eleven".