30302310221 has 4 divisors (see below), whose sum is σ = 31347217500. Its totient is φ = 29257402944.

The previous prime is 30302310179. The next prime is 30302310223. The reversal of 30302310221 is 12201320303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12201320303 = 80789 ⋅151027.

It can be written as a sum of positive squares in 2 ways, for example, as 24496632196 + 5805678025 = 156514^2 + 76195^2 .

It is a cyclic number.

It is not a de Polignac number, because 30302310221 - 2¹⁰ = 30302309197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30302310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30302310223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522453596 + ... + 522453653.

It is an arithmetic number, because the mean of its divisors is an integer number (7836804375).

Almost surely, 2^30302310221 is an apocalyptic number.

It is an amenable number.

30302310221 is a deficient number, since it is larger than the sum of its proper divisors (1044907279).

30302310221 is a wasteful number, since it uses less digits than its factorization.

30302310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044907278.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30302310221 its reverse (12201320303), we get a palindrome (42503630524).

The spelling of 30302310221 in words is "thirty billion, three hundred two million, three hundred ten thousand, two hundred twenty-one".