1123252111 has 2 divisors, whose sum is σ = 1123252112. Its totient is φ = 1123252110.

The previous prime is 1123252079. The next prime is 1123252121. The reversal of 1123252111 is 1112523211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123252111 - 2⁵ = 1123252079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123252121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561626055 + 561626056.

It is an arithmetic number, because the mean of its divisors is an integer number (561626056).

Almost surely, 2^1123252111 is an apocalyptic number.

1123252111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123252111 is an equidigital number, since it uses as much as digits as its factorization.

1123252111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 19.

The square root of 1123252111 is about 33514.9535431574. The cubic root of 1123252111 is about 1039.5030018677.

Adding to 1123252111 its reverse (1112523211), we get a palindrome (2235775322).

The spelling of 1123252111 in words is "one billion, one hundred twenty-three million, two hundred fifty-two thousand, one hundred eleven".