1320331321123 has 16 divisors (see below), whose sum is σ = 1362928542976. Its totient is φ = 1278321095520.

The previous prime is 1320331321061. The next prime is 1320331321147. The reversal of 1320331321123 is 3211231330231.

It is a cyclic number.

It is not a de Polignac number, because 1320331321123 - 2¹⁷ = 1320331190051 is a prime.

It is a super-2 number, since 2×1320331321123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320331325123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2113090 + ... + 2665672.

It is an arithmetic number, because the mean of its divisors is an integer number (85183033936).

Almost surely, 2^{1320331321123} is an apocalyptic number.

1320331321123 is a deficient number, since it is larger than the sum of its proper divisors (42597221853).

1320331321123 is a wasteful number, since it uses less digits than its factorization.

1320331321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553114.

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

Adding to 1320331321123 its reverse (3211231330231), we get a palindrome (4531562651354).

The spelling of 1320331321123 in words is "one trillion, three hundred twenty billion, three hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".