1121312105 has 8 divisors (see below), whose sum is σ = 1345776000. Its totient is φ = 896915376.

The previous prime is 1121312089. The next prime is 1121312107. The reversal of 1121312105 is 5012131211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121312105 - 2⁴ = 1121312089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121312107) 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 in 7 ways as a sum of consecutive naturals, for example, 33806 + ... + 58184.

It is an arithmetic number, because the mean of its divisors is an integer number (168222000).

Almost surely, 2^1121312105 is an apocalyptic number.

It is an amenable number.

1121312105 is a deficient number, since it is larger than the sum of its proper divisors (224463895).

1121312105 is an equidigital number, since it uses as much as digits as its factorization.

1121312105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33583.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1121312105 is about 33485.9986412232. The cubic root of 1121312105 is about 1038.9042036225.

Adding to 1121312105 its reverse (5012131211), we get a palindrome (6133443316).

The spelling of 1121312105 in words is "one billion, one hundred twenty-one million, three hundred twelve thousand, one hundred five".