11303113121 has 4 divisors (see below), whose sum is σ = 11304817200. Its totient is φ = 11301409044.

The previous prime is 11303113117. The next prime is 11303113141. The reversal of 11303113121 is 12131130311.

11303113121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12131130311 = 77839 ⋅155849.

It is a cyclic number.

It is not a de Polignac number, because 11303113121 - 2² = 11303113117 is a prime.

It is a super-2 number, since 2×11303113121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11303113121.

It is not an unprimeable number, because it can be changed into a prime (11303113141) 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 3 ways as a sum of consecutive naturals, for example, 842051 + ... + 855368.

It is an arithmetic number, because the mean of its divisors is an integer number (2826204300).

Almost surely, 2^11303113121 is an apocalyptic number.

It is an amenable number.

11303113121 is a deficient number, since it is larger than the sum of its proper divisors (1704079).

11303113121 is an equidigital number, since it uses as much as digits as its factorization.

11303113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704078.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11303113121 its reverse (12131130311), we get a palindrome (23434243432).

The spelling of 11303113121 in words is "eleven billion, three hundred three million, one hundred thirteen thousand, one hundred twenty-one".