30003056221 has 2 divisors, whose sum is σ = 30003056222. Its totient is φ = 30003056220.

The previous prime is 30003056183. The next prime is 30003056227. The reversal of 30003056221 is 12265030003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27972562500 + 2030493721 = 167250^2 + 45061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30003056221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30003056192 and 30003056201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30003056227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15001528110 + 15001528111.

It is an arithmetic number, because the mean of its divisors is an integer number (15001528111).

Almost surely, 2^30003056221 is an apocalyptic number.

It is an amenable number.

30003056221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30003056221 is an equidigital number, since it uses as much as digits as its factorization.

30003056221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 30003056221 its reverse (12265030003), we get a palindrome (42268086224).

The spelling of 30003056221 in words is "thirty billion, three million, fifty-six thousand, two hundred twenty-one".