1330201321021 has 4 divisors (see below), whose sum is σ = 1337890346172. Its totient is φ = 1322512295872.

The previous prime is 1330201320991. The next prime is 1330201321039. The reversal of 1330201321021 is 1201231020331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1039561728921 + 290639592100 = 1019589^2 + 539110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330201321021 - 2¹¹ = 1330201318973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1330201321021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330201321121) 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, 3844512316 + ... + 3844512661.

It is an arithmetic number, because the mean of its divisors is an integer number (334472586543).

Almost surely, 2^{1330201321021} is an apocalyptic number.

It is an amenable number.

1330201321021 is a deficient number, since it is larger than the sum of its proper divisors (7689025151).

1330201321021 is an equidigital number, since it uses as much as digits as its factorization.

1330201321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689025150.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1330201321021 its reverse (1201231020331), we get a palindrome (2531432341352).

The spelling of 1330201321021 in words is "one trillion, three hundred thirty billion, two hundred one million, three hundred twenty-one thousand, twenty-one".