1330321032221 has 4 divisors (see below), whose sum is σ = 1330345125312. Its totient is φ = 1330296939132.

The previous prime is 1330321032197. The next prime is 1330321032233. The reversal of 1330321032221 is 1222301230331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1330321032221 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 (1330321034221) 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, 11963531 + ... + 12074216.

It is an arithmetic number, because the mean of its divisors is an integer number (332586281328).

Almost surely, 2^{1330321032221} is an apocalyptic number.

It is an amenable number.

1330321032221 is a deficient number, since it is larger than the sum of its proper divisors (24093091).

1330321032221 is an equidigital number, since it uses as much as digits as its factorization.

1330321032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24093090.

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

Adding to 1330321032221 its reverse (1222301230331), we get a palindrome (2552622262552).

The spelling of 1330321032221 in words is "one trillion, three hundred thirty billion, three hundred twenty-one million, thirty-two thousand, two hundred twenty-one".