1112125213 has 4 divisors (see below), whose sum is σ = 1112592348. Its totient is φ = 1111658080.

The previous prime is 1112125207. The next prime is 1112125277. The reversal of 1112125213 is 3125212111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33790969 + 1078334244 = 5813^2 + 32838^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112125213 - 2⁵ = 1112125181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112125013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229978 + ... + 234763.

It is an arithmetic number, because the mean of its divisors is an integer number (278148087).

Almost surely, 2^1112125213 is an apocalyptic number.

It is an amenable number.

1112125213 is a deficient number, since it is larger than the sum of its proper divisors (467135).

1112125213 is an equidigital number, since it uses as much as digits as its factorization.

1112125213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467134.

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

The square root of 1112125213 is about 33348.5413923908. The cubic root of 1112125213 is about 1036.0591778706.

Adding to 1112125213 its reverse (3125212111), we get a palindrome (4237337324).

The spelling of 1112125213 in words is "one billion, one hundred twelve million, one hundred twenty-five thousand, two hundred thirteen".