1320421120113 has 24 divisors (see below), whose sum is σ = 1864665681888. Its totient is φ = 831003167808.

The previous prime is 1320421120103. The next prime is 1320421120121. The reversal of 1320421120113 is 3110211240231.

It is not a de Polignac number, because 1320421120113 - 2²⁸ = 1320152684657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320421120113.

It is not an unprimeable number, because it can be changed into a prime (1320421120103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1847620 + ... + 2460597.

It is an arithmetic number, because the mean of its divisors is an integer number (77694403412).

Almost surely, 2^{1320421120113} is an apocalyptic number.

It is an amenable number.

1320421120113 is a deficient number, since it is larger than the sum of its proper divisors (544244561775).

1320421120113 is a wasteful number, since it uses less digits than its factorization.

1320421120113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308541 (or 4308522 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1320421120113 its reverse (3110211240231), we get a palindrome (4430632360344).

The spelling of 1320421120113 in words is "one trillion, three hundred twenty billion, four hundred twenty-one million, one hundred twenty thousand, one hundred thirteen".