1121004403 has 16 divisors (see below), whose sum is σ = 1151539200. Its totient is φ = 1090980000.

The previous prime is 1121004397. The next prime is 1121004419. The reversal of 1121004403 is 3044001211.

It is a cyclic number.

It is not a de Polignac number, because 1121004403 - 2⁵ = 1121004371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121004103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3211873 + ... + 3212221.

It is an arithmetic number, because the mean of its divisors is an integer number (71971200).

Almost surely, 2^1121004403 is an apocalyptic number.

1121004403 is a deficient number, since it is larger than the sum of its proper divisors (30534797).

1121004403 is a wasteful number, since it uses less digits than its factorization.

1121004403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1121004403 is about 33481.4038385489. The cubic root of 1121004403 is about 1038.8091655134.

Adding to 1121004403 its reverse (3044001211), we get a palindrome (4165005614).

The spelling of 1121004403 in words is "one billion, one hundred twenty-one million, four thousand, four hundred three".