111112121233 has 2 divisors, whose sum is σ = 111112121234. Its totient is φ = 111112121232.

The previous prime is 111112121209. The next prime is 111112121243. The reversal of 111112121233 is 332121211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57200853889 + 53911267344 = 239167^2 + 232188^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112121233 - 2²⁵ = 111078566801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111112121233.

It is not a weakly prime, because it can be changed into another prime (111112121243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556060616 + 55556060617.

It is an arithmetic number, because the mean of its divisors is an integer number (55556060617).

Almost surely, 2^111112121233 is an apocalyptic number.

It is an amenable number.

111112121233 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112121233 is an equidigital number, since it uses as much as digits as its factorization.

111112121233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 19.

Adding to 111112121233 its reverse (332121211111), we get a palindrome (443233332344).

The spelling of 111112121233 in words is "one hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, two hundred thirty-three".