1303111003121 has 4 divisors (see below), whose sum is σ = 1324473478644. Its totient is φ = 1281748527600.

The previous prime is 1303111003093. The next prime is 1303111003153. The reversal of 1303111003121 is 1213001113031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 589922308096 + 713188695025 = 768064^2 + 844505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303111003121 - 2¹⁰ = 1303111002097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303111003121.

It is not an unprimeable number, because it can be changed into a prime (1303111003721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10681237670 + ... + 10681237791.

It is an arithmetic number, because the mean of its divisors is an integer number (331118369661).

Almost surely, 2^{1303111003121} is an apocalyptic number.

It is an amenable number.

1303111003121 is a deficient number, since it is larger than the sum of its proper divisors (21362475523).

1303111003121 is an equidigital number, since it uses as much as digits as its factorization.

1303111003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21362475522.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1303111003121 its reverse (1213001113031), we get a palindrome (2516112116152).

The spelling of 1303111003121 in words is "one trillion, three hundred three billion, one hundred eleven million, three thousand, one hundred twenty-one".