1303223313121 has 4 divisors (see below), whose sum is σ = 1303225642672. Its totient is φ = 1303220983572.

The previous prime is 1303223312891. The next prime is 1303223313127. The reversal of 1303223313121 is 1213133223031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1303223313121 - 2²³ = 1303214924513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303223313127) 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, 235510 + ... + 1631536.

It is an arithmetic number, because the mean of its divisors is an integer number (325806410668).

Almost surely, 2^{1303223313121} is an apocalyptic number.

It is an amenable number.

1303223313121 is a deficient number, since it is larger than the sum of its proper divisors (2329551).

1303223313121 is an equidigital number, since it uses as much as digits as its factorization.

1303223313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329550.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1303223313121 its reverse (1213133223031), we get a palindrome (2516356536152).

It can be divided in two parts, 130322 and 3313121, that added together give a palindrome (3443443).

The spelling of 1303223313121 in words is "one trillion, three hundred three billion, two hundred twenty-three million, three hundred thirteen thousand, one hundred twenty-one".