11121003 has 16 divisors (see below), whose sum is σ = 16536960. Its totient is φ = 7386408.

The previous prime is 11120981. The next prime is 11121037. The reversal of 11121003 is 30012111.

It is not a de Polignac number, because 11121003 - 2¹³ = 11112811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11121083) 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 15 ways as a sum of consecutive naturals, for example, 8776 + ... + 9962.

It is an arithmetic number, because the mean of its divisors is an integer number (1033560).

Almost surely, 2^11121003 is an apocalyptic number.

11121003 is a deficient number, since it is larger than the sum of its proper divisors (5415957).

11121003 is a wasteful number, since it uses less digits than its factorization.

11121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 11121003 is about 3334.8167865716. The cubic root of 11121003 is about 223.2105166163.

Adding to 11121003 its reverse (30012111), we get a palindrome (41133114).

The spelling of 11121003 in words is "eleven million, one hundred twenty-one thousand, three".