30020221 has 36 divisors (see below), whose sum is σ = 40010656. Its totient is φ = 22041360.

The previous prime is 30020213. The next prime is 30020227. The reversal of 30020221 is 12202003.

It is not a de Polignac number, because 30020221 - 2³ = 30020213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30020198 and 30020207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 448030 + ... + 448096.

Almost surely, 2^30020221 is an apocalyptic number.

It is an amenable number.

30020221 is a deficient number, since it is larger than the sum of its proper divisors (9990435).

30020221 is a wasteful number, since it uses less digits than its factorization.

30020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30020221 is about 5479.0711804101. The cubic root of 30020221 is about 310.7930475254.

Adding to 30020221 its reverse (12202003), we get a palindrome (42222224).

The spelling of 30020221 in words is "thirty million, twenty thousand, two hundred twenty-one".