1121312203403 has 8 divisors (see below), whose sum is σ = 1281642106080. Its totient is φ = 961017912000.

The previous prime is 1121312203379. The next prime is 1121312203411. The reversal of 1121312203403 is 3043022131211.

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 1121312203403 - 2¹⁴ = 1121312187019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121312203423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8835308 + ... + 8961321.

It is an arithmetic number, because the mean of its divisors is an integer number (160205263260).

Almost surely, 2^{1121312203403} is an apocalyptic number.

1121312203403 is a deficient number, since it is larger than the sum of its proper divisors (160329902677).

1121312203403 is an equidigital number, since it uses as much as digits as its factorization.

1121312203403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805637.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1121312203403 its reverse (3043022131211), we get a palindrome (4164334334614).

The spelling of 1121312203403 in words is "one trillion, one hundred twenty-one billion, three hundred twelve million, two hundred three thousand, four hundred three".