1121203404 has 48 divisors (see below), whose sum is σ = 2912291200. Its totient is φ = 373031568.

The previous prime is 1121203367. The next prime is 1121203409. The reversal of 1121203404 is 4043021211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1121203409) 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, 49587 + ... + 68565.

Almost surely, 2^1121203404 is an apocalyptic number.

It is an amenable number.

1121203404 is an abundant number, since it is smaller than the sum of its proper divisors (1791087796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121203404 is a wasteful number, since it uses less digits than its factorization.

1121203404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19539 (or 19531 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1121203404 is about 33484.3755205320. The cubic root of 1121203404 is about 1038.8706317696.

Adding to 1121203404 its reverse (4043021211), we get a palindrome (5164224615).

The spelling of 1121203404 in words is "one billion, one hundred twenty-one million, two hundred three thousand, four hundred four".