11121202313 has 4 divisors (see below), whose sum is σ = 11976679428. Its totient is φ = 10265725200.

The previous prime is 11121202297. The next prime is 11121202321. The reversal of 11121202313 is 31320212111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31320212111 = 48049 ⋅651839.

It can be written as a sum of positive squares in 2 ways, for example, as 7161898384 + 3959303929 = 84628^2 + 62923^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121202313 - 2⁴ = 11121202297 is a prime.

It is a super-2 number, since 2×11121202313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121202291 and 11121202300.

It is not an unprimeable number, because it can be changed into a prime (11121202333) 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 3 ways as a sum of consecutive naturals, for example, 427738538 + ... + 427738563.

It is an arithmetic number, because the mean of its divisors is an integer number (2994169857).

Almost surely, 2^11121202313 is an apocalyptic number.

11121202313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11121202313 is a deficient number, since it is larger than the sum of its proper divisors (855477115).

11121202313 is an equidigital number, since it uses as much as digits as its factorization.

11121202313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855477114.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11121202313 its reverse (31320212111), we get a palindrome (42441414424).

The spelling of 11121202313 in words is "eleven billion, one hundred twenty-one million, two hundred two thousand, three hundred thirteen".