1121241313 has 12 divisors (see below), whose sum is σ = 1140029388. Its totient is φ = 1102745600.

The previous prime is 1121241287. The next prime is 1121241323. The reversal of 1121241313 is 3131421211.

It can be written as a sum of positive squares in 6 ways, for example, as 1468944 + 1119772369 = 1212^2 + 33463^2 .

It is not a de Polignac number, because 1121241313 - 2¹⁷ = 1121110241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121241323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2795913 + ... + 2796313.

It is an arithmetic number, because the mean of its divisors is an integer number (95002449).

Almost surely, 2^1121241313 is an apocalyptic number.

It is an amenable number.

1121241313 is a deficient number, since it is larger than the sum of its proper divisors (18788075).

1121241313 is an frugal number, since it uses more digits than its factorization.

1121241313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 843 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1121241313 is about 33484.9415857337. The cubic root of 1121241313 is about 1038.8823400534.

Adding to 1121241313 its reverse (3131421211), we get a palindrome (4252662524).

It can be divided in two parts, 11212 and 41313, that added together give a palindrome (52525).

The spelling of 1121241313 in words is "one billion, one hundred twenty-one million, two hundred forty-one thousand, three hundred thirteen".