1121123213003 has 4 divisors (see below), whose sum is σ = 1122395771448. Its totient is φ = 1119850654560.

The previous prime is 1121123212997. The next prime is 1121123213017. The reversal of 1121123213003 is 3003123211211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121123213003 - 2²⁰ = 1121122164427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121123213603) 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 3 ways as a sum of consecutive naturals, for example, 636277901 + ... + 636279662.

It is an arithmetic number, because the mean of its divisors is an integer number (280598942862).

Almost surely, 2^{1121123213003} is an apocalyptic number.

1121123213003 is a deficient number, since it is larger than the sum of its proper divisors (1272558445).

1121123213003 is an equidigital number, since it uses as much as digits as its factorization.

1121123213003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272558444.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1121123213003 its reverse (3003123211211), we get a palindrome (4124246424214).

The spelling of 1121123213003 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, two hundred thirteen thousand, three".