1121331203 has 8 divisors (see below), whose sum is σ = 1200633840. Its totient is φ = 1043511040.

The previous prime is 1121331199. The next prime is 1121331221. The reversal of 1121331203 is 3021331211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121331203 - 2² = 1121331199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1121331503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369053 + ... + 372078.

It is an arithmetic number, because the mean of its divisors is an integer number (150079230).

Almost surely, 2^1121331203 is an apocalyptic number.

1121331203 is a deficient number, since it is larger than the sum of its proper divisors (79302637).

1121331203 is an equidigital number, since it uses as much as digits as its factorization.

1121331203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741237.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1121331203 is about 33486.2838039696. The cubic root of 1121331203 is about 1038.9101017365.

Adding to 1121331203 its reverse (3021331211), we get a palindrome (4142662414).

The spelling of 1121331203 in words is "one billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred three".