1121321001003 has 8 divisors (see below), whose sum is σ = 1708679620608. Its totient is φ = 640754857704.

The previous prime is 1121321001001. The next prime is 1121321001121. The reversal of 1121321001003 is 3001001231211.

It is a happy number.

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

It is not a de Polignac number, because 1121321001003 - 2¹ = 1121321001001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121321001001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26698119051 + ... + 26698119092.

It is an arithmetic number, because the mean of its divisors is an integer number (213584952576).

Almost surely, 2^{1121321001003} is an apocalyptic number.

1121321001003 is a deficient number, since it is larger than the sum of its proper divisors (587358619605).

1121321001003 is an equidigital number, since it uses as much as digits as its factorization.

1121321001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53396238153.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1121321001003 its reverse (3001001231211), we get a palindrome (4122322232214).

The spelling of 1121321001003 in words is "one trillion, one hundred twenty-one billion, three hundred twenty-one million, one thousand, three".