111233121223111 has 2 divisors, whose sum is σ = 111233121223112. Its totient is φ = 111233121223110.

The previous prime is 111233121223027. The next prime is 111233121223121. The reversal of 111233121223111 is 111322121332111.

It is a strong prime.

It is an emirp because it is prime and its reverse (111322121332111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111233121223111 - 2¹¹ = 111233121221063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111233121223121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55616560611555 + 55616560611556.

It is an arithmetic number, because the mean of its divisors is an integer number (55616560611556).

Almost surely, 2^{111233121223111} is an apocalyptic number.

111233121223111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111233121223111 is an equidigital number, since it uses as much as digits as its factorization.

111233121223111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

Adding to 111233121223111 its reverse (111322121332111), we get a palindrome (222555242555222).

The spelling of 111233121223111 in words is "one hundred eleven trillion, two hundred thirty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred eleven".