11121303 has 4 divisors (see below), whose sum is σ = 14828408. Its totient is φ = 7414200.

The previous prime is 11121223. The next prime is 11121307. The reversal of 11121303 is 30312111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30312111 = 3 ⋅10104037.

It is not a de Polignac number, because 11121303 - 2¹⁰ = 11120279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121307) 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, 1853548 + ... + 1853553.

It is an arithmetic number, because the mean of its divisors is an integer number (3707102).

Almost surely, 2^11121303 is an apocalyptic number.

11121303 is a deficient number, since it is larger than the sum of its proper divisors (3707105).

11121303 is an equidigital number, since it uses as much as digits as its factorization.

11121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707104.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11121303 is about 3334.8617662506. The cubic root of 11121303 is about 223.2125237060.

Adding to 11121303 its reverse (30312111), we get a palindrome (41433414).

It can be divided in two parts, 1112 and 1303, that added together give a triangular number (2415 = T₆₉).

The spelling of 11121303 in words is "eleven million, one hundred twenty-one thousand, three hundred three".