1330233210221 has 4 divisors (see below), whose sum is σ = 1330242097212. Its totient is φ = 1330224323232.

The previous prime is 1330233210211. The next prime is 1330233210253. The reversal of 1330233210221 is 1220123320331.

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 503972208100 + 826261002121 = 709910^2 + 908989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330233210221 - 2²² = 1330229015917 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 (1330233210211) 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 3 ways as a sum of consecutive naturals, for example, 4215056 + ... + 4519641.

It is an arithmetic number, because the mean of its divisors is an integer number (332560524303).

Almost surely, 2^{1330233210221} is an apocalyptic number.

It is an amenable number.

1330233210221 is a deficient number, since it is larger than the sum of its proper divisors (8886991).

1330233210221 is an equidigital number, since it uses as much as digits as its factorization.

1330233210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886990.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1330233210221 its reverse (1220123320331), we get a palindrome (2550356530552).

The spelling of 1330233210221 in words is "one trillion, three hundred thirty billion, two hundred thirty-three million, two hundred ten thousand, two hundred twenty-one".