30205105221 has 8 divisors (see below), whose sum is σ = 40649861664. Its totient is φ = 19948542800.

The previous prime is 30205105193. The next prime is 30205105261. The reversal of 30205105221 is 12250150203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30205105221 - 2¹⁰ = 30205104197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205105261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47048130 + ... + 47048771.

It is an arithmetic number, because the mean of its divisors is an integer number (5081232708).

Almost surely, 2^30205105221 is an apocalyptic number.

It is an amenable number.

30205105221 is a deficient number, since it is larger than the sum of its proper divisors (10444756443).

30205105221 is a wasteful number, since it uses less digits than its factorization.

30205105221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94097011.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 30205105221 its reverse (12250150203), we get a palindrome (42455255424).

The spelling of 30205105221 in words is "thirty billion, two hundred five million, one hundred five thousand, two hundred twenty-one".