1320021013303 has 4 divisors (see below), whose sum is σ = 1320231986640. Its totient is φ = 1319810039968.

The previous prime is 1320021013151. The next prime is 1320021013307. The reversal of 1320021013303 is 3033101200231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320021013303 - 2²⁵ = 1319987458871 is a prime.

It is a super-2 number, since 2×1320021013303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320021013307) 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, 105477283 + ... + 105489796.

It is an arithmetic number, because the mean of its divisors is an integer number (330057996660).

Almost surely, 2^{1320021013303} is an apocalyptic number.

1320021013303 is a deficient number, since it is larger than the sum of its proper divisors (210973337).

1320021013303 is an equidigital number, since it uses as much as digits as its factorization.

1320021013303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210973336.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1320021013303 its reverse (3033101200231), we get a palindrome (4353122213534).

The spelling of 1320021013303 in words is "one trillion, three hundred twenty billion, twenty-one million, thirteen thousand, three hundred three".