30020033221 has 2 divisors, whose sum is σ = 30020033222. Its totient is φ = 30020033220.

The previous prime is 30020033207. The next prime is 30020033227. The reversal of 30020033221 is 12233002003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18093209121 + 11926824100 = 134511^2 + 109210^2 .

It is a cyclic number.

It is not a de Polignac number, because 30020033221 - 2⁵ = 30020033189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30020033195 and 30020033204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30020033227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010016610 + 15010016611.

It is an arithmetic number, because the mean of its divisors is an integer number (15010016611).

Almost surely, 2^30020033221 is an apocalyptic number.

It is an amenable number.

30020033221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30020033221 is an equidigital number, since it uses as much as digits as its factorization.

30020033221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30020033221 its reverse (12233002003), we get a palindrome (42253035224).

The spelling of 30020033221 in words is "thirty billion, twenty million, thirty-three thousand, two hundred twenty-one".