11303313121 has 4 divisors (see below), whose sum is σ = 11566180912. Its totient is φ = 11040445332.

The previous prime is 11303313079. The next prime is 11303313157. The reversal of 11303313121 is 12131330311.

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.

It is a cyclic number.

It is not a de Polignac number, because 11303313121 - 2¹⁵ = 11303280353 is a prime.

It is a super-2 number, since 2×11303313121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11303313181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131433831 + ... + 131433916.

It is an arithmetic number, because the mean of its divisors is an integer number (2891545228).

Almost surely, 2^11303313121 is an apocalyptic number.

It is an amenable number.

11303313121 is a deficient number, since it is larger than the sum of its proper divisors (262867791).

11303313121 is an equidigital number, since it uses as much as digits as its factorization.

11303313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262867790.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11303313121 its reverse (12131330311), we get a palindrome (23434643432).

The spelling of 11303313121 in words is "eleven billion, three hundred three million, three hundred thirteen thousand, one hundred twenty-one".