1121312195 has 16 divisors (see below), whose sum is σ = 1389618048. Its totient is φ = 867957120.

The previous prime is 1121312183. The next prime is 1121312207. The reversal of 1121312195 is 5912131211.

It is a Cunningham number, because it is equal to 33486²-1.

It is an interprime number because it is at equal distance from previous prime (1121312183) and next prime (1121312207).

It is a de Polignac number, because none of the positive numbers 2^k-1121312195 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16742 + ... + 50228.

It is an arithmetic number, because the mean of its divisors is an integer number (86851128).

Almost surely, 2^1121312195 is an apocalyptic number.

1121312195 is a deficient number, since it is larger than the sum of its proper divisors (268305853).

1121312195 is a wasteful number, since it uses less digits than its factorization.

1121312195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33710.

The product of its digits is 540, while the sum is 26.

The square root of 1121312195 is about 33485.9999850684. Note that the first 4 decimals coincide. The cubic root of 1121312195 is about 1038.9042314177.

The spelling of 1121312195 in words is "one billion, one hundred twenty-one million, three hundred twelve thousand, one hundred ninety-five".