1122109985 has 4 divisors (see below), whose sum is σ = 1346531988. Its totient is φ = 897687984.

The previous prime is 1122109981. The next prime is 1122109987. The reversal of 1122109985 is 5899012211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5899012211 = 457 ⋅12908123.

It can be written as a sum of positive squares in 2 ways, for example, as 254689681 + 867420304 = 15959^2 + 29452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122109985 - 2² = 1122109981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122109981) 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, 112210994 + ... + 112211003.

It is an arithmetic number, because the mean of its divisors is an integer number (336632997).

Almost surely, 2^1122109985 is an apocalyptic number.

It is an amenable number.

1122109985 is a deficient number, since it is larger than the sum of its proper divisors (224422003).

1122109985 is an equidigital number, since it uses as much as digits as its factorization.

1122109985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224422002.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 1122109985 is about 33497.9101586950. The cubic root of 1122109985 is about 1039.1505591647.

The spelling of 1122109985 in words is "one billion, one hundred twenty-two million, one hundred nine thousand, nine hundred eighty-five".