1121111317 has 2 divisors, whose sum is σ = 1121111318. Its totient is φ = 1121111316.

The previous prime is 1121111293. The next prime is 1121111399. The reversal of 1121111317 is 7131111211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120977361 + 133956 = 33481^2 + 366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121111317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121111294 and 1121111303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121111417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560555658 + 560555659.

It is an arithmetic number, because the mean of its divisors is an integer number (560555659).

Almost surely, 2^1121111317 is an apocalyptic number.

It is an amenable number.

1121111317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111317 is an equidigital number, since it uses as much as digits as its factorization.

1121111317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 19.

The square root of 1121111317 is about 33483.0004181226. Note that the first 3 decimals coincide. The cubic root of 1121111317 is about 1038.8421893839.

Adding to 1121111317 its reverse (7131111211), we get a palindrome (8252222528).

The spelling of 1121111317 in words is "one billion, one hundred twenty-one million, one hundred eleven thousand, three hundred seventeen".