1123122125 has 16 divisors (see below), whose sum is σ = 1407150576. Its totient is φ = 894976000.

The previous prime is 1123122109. The next prime is 1123122127. The reversal of 1123122125 is 5212213211.

It can be written as a sum of positive squares in 8 ways, for example, as 114297481 + 1008824644 = 10691^2 + 31762^2 .

It is not a de Polignac number, because 1123122125 - 2⁴ = 1123122109 is a prime.

It is a super-2 number, since 2×1123122125² = 2522806615329031250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123122097 and 1123122106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123122127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14645 + ... + 49605.

It is an arithmetic number, because the mean of its divisors is an integer number (87946911).

Almost surely, 2^1123122125 is an apocalyptic number.

It is an amenable number.

1123122125 is a deficient number, since it is larger than the sum of its proper divisors (284028451).

1123122125 is an equidigital number, since it uses as much as digits as its factorization.

1123122125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35233 (or 35223 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 1123122125 is about 33513.0142631187. The cubic root of 1123122125 is about 1039.4629022177.

Adding to 1123122125 its reverse (5212213211), we get a palindrome (6335335336).

The spelling of 1123122125 in words is "one billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-five".