111111111111233 has 2 divisors, whose sum is σ = 111111111111234. Its totient is φ = 111111111111232.

The previous prime is 111111111111229. The next prime is 111111111111389. The reversal of 111111111111233 is 332111111111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85763027853889 + 25348083257344 = 9260833^2 + 5034688^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111111111233 - 2² = 111111111111229 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (111111110111233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555555555616 + 55555555555617.

It is an arithmetic number, because the mean of its divisors is an integer number (55555555555617).

Almost surely, 2^{111111111111233} is an apocalyptic number.

It is an amenable number.

111111111111233 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111111111233 is an equidigital number, since it uses as much as digits as its factorization.

111111111111233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18, while the sum is 20.

Adding to 111111111111233 its reverse (332111111111111), we get a palindrome (443222222222344).

The spelling of 111111111111233 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, two hundred thirty-three".