1313330123221 has 8 divisors (see below), whose sum is σ = 1322317971000. Its totient is φ = 1304344589760.

The previous prime is 1313330123213. The next prime is 1313330123233. The reversal of 1313330123221 is 1223210333131.

It can be written as a sum of positive squares in 4 ways, for example, as 449147934225 + 864182188996 = 670185^2 + 929614^2 .

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 1313330123221 - 2³ = 1313330123213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313330126221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568011 + ... + 1717351.

It is an arithmetic number, because the mean of its divisors is an integer number (165289746375).

Almost surely, 2^{1313330123221} is an apocalyptic number.

It is an amenable number.

1313330123221 is a deficient number, since it is larger than the sum of its proper divisors (8987847779).

1313330123221 is a wasteful number, since it uses less digits than its factorization.

1313330123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157159.

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

Adding to 1313330123221 its reverse (1223210333131), we get a palindrome (2536540456352).

The spelling of 1313330123221 in words is "one trillion, three hundred thirteen billion, three hundred thirty million, one hundred twenty-three thousand, two hundred twenty-one".