330231104133221 has 4 divisors (see below), whose sum is σ = 338285521307244. Its totient is φ = 322176686959200.

The previous prime is 330231104133109. The next prime is 330231104133277. The reversal of 330231104133221 is 122331401132033.

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 5807569812100 + 324423534321121 = 2409890^2 + 18011761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330231104133221 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 (330231104133421) 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, 4027208586950 + ... + 4027208587031.

It is an arithmetic number, because the mean of its divisors is an integer number (84571380326811).

Almost surely, 2^{330231104133221} is an apocalyptic number.

It is an amenable number.

330231104133221 is a deficient number, since it is larger than the sum of its proper divisors (8054417174023).

330231104133221 is an equidigital number, since it uses as much as digits as its factorization.

330231104133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8054417174022.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 330231104133221 its reverse (122331401132033), we get a palindrome (452562505265254).

The spelling of 330231104133221 in words is "three hundred thirty trillion, two hundred thirty-one billion, one hundred four million, one hundred thirty-three thousand, two hundred twenty-one".