1330330331221 has 4 divisors (see below), whose sum is σ = 1336039903692. Its totient is φ = 1324620758752.

The previous prime is 1330330331219. The next prime is 1330330331237. The reversal of 1330330331221 is 1221330330331.

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 228856992100 + 1101473339121 = 478390^2 + 1049511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330330331221 - 2¹ = 1330330331219 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 (1330330331021) 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, 2854785886 + ... + 2854786351.

It is an arithmetic number, because the mean of its divisors is an integer number (334009975923).

Almost surely, 2^{1330330331221} is an apocalyptic number.

It is an amenable number.

1330330331221 is a deficient number, since it is larger than the sum of its proper divisors (5709572471).

1330330331221 is an equidigital number, since it uses as much as digits as its factorization.

1330330331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709572470.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 1330330331221 its reverse (1221330330331), we get a palindrome (2551660661552).

The spelling of 1330330331221 in words is "one trillion, three hundred thirty billion, three hundred thirty million, three hundred thirty-one thousand, two hundred twenty-one".