330402401213221 has 4 divisors (see below), whose sum is σ = 330765082225344. Its totient is φ = 330039720201100.

The previous prime is 330402401213219. The next prime is 330402401213237. The reversal of 330402401213221 is 122312104204033.

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 not a de Polignac number, because 330402401213221 - 2¹ = 330402401213219 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 330402401213221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330402401213281) 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, 181340504695 + ... + 181340506516.

It is an arithmetic number, because the mean of its divisors is an integer number (82691270556336).

Almost surely, 2^{330402401213221} is an apocalyptic number.

It is an amenable number.

330402401213221 is a deficient number, since it is larger than the sum of its proper divisors (362681012123).

330402401213221 is an equidigital number, since it uses as much as digits as its factorization.

330402401213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362681012122.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 330402401213221 its reverse (122312104204033), we get a palindrome (452714505417254).

The spelling of 330402401213221 in words is "three hundred thirty trillion, four hundred two billion, four hundred one million, two hundred thirteen thousand, two hundred twenty-one".