111123253 has 2 divisors, whose sum is σ = 111123254. Its totient is φ = 111123252.

The previous prime is 111123197. The next prime is 111123269. The reversal of 111123253 is 352321111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99241444 + 11881809 = 9962^2 + 3447^2 .

It is an emirp because it is prime and its reverse (352321111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111123253 - 2⁹ = 111122741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111123253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111123283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561626 + 55561627.

It is an arithmetic number, because the mean of its divisors is an integer number (55561627).

Almost surely, 2^111123253 is an apocalyptic number.

It is an amenable number.

111123253 is a deficient number, since it is larger than the sum of its proper divisors (1).

111123253 is an equidigital number, since it uses as much as digits as its factorization.

111123253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 19.

The square root of 111123253 is about 10541.5014585210. The cubic root of 111123253 is about 480.7673677653.

Adding to 111123253 its reverse (352321111), we get a palindrome (463444364).

It can be divided in two parts, 11112 and 3253, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 111123253 in words is "one hundred eleven million, one hundred twenty-three thousand, two hundred fifty-three".