330030323121221 has 4 divisors (see below), whose sum is σ = 330032489153772. Its totient is φ = 330028157088672.

The previous prime is 330030323121217. The next prime is 330030323121253. The reversal of 330030323121221 is 122121323030033.

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 66163761760321 + 263866561360900 = 8134111^2 + 16243970^2 .

It is a cyclic number.

It is not a de Polignac number, because 330030323121221 - 2² = 330030323121217 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 (330030323121281) 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, 1082787710 + ... + 1083092463.

It is an arithmetic number, because the mean of its divisors is an integer number (82508122288443).

Almost surely, 2^{330030323121221} is an apocalyptic number.

It is an amenable number.

330030323121221 is a deficient number, since it is larger than the sum of its proper divisors (2166032551).

330030323121221 is a wasteful number, since it uses less digits than its factorization.

330030323121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166032550.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 330030323121221 its reverse (122121323030033), we get a palindrome (452151646151254).

The spelling of 330030323121221 in words is "three hundred thirty trillion, thirty billion, three hundred twenty-three million, one hundred twenty-one thousand, two hundred twenty-one".