30235221 has 8 divisors (see below), whose sum is σ = 44792960. Its totient is φ = 20156796.

The previous prime is 30235207. The next prime is 30235223. The reversal of 30235221 is 12253203.

It is not a de Polignac number, because 30235221 - 2⁹ = 30234709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30235194 and 30235203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30235223) 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, 559885 + ... + 559938.

It is an arithmetic number, because the mean of its divisors is an integer number (5599120).

Almost surely, 2^30235221 is an apocalyptic number.

It is an amenable number.

30235221 is a deficient number, since it is larger than the sum of its proper divisors (14557739).

30235221 is a wasteful number, since it uses less digits than its factorization.

30235221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119832 (or 1119826 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30235221 is about 5498.6562904040. The cubic root of 30235221 is about 311.5332332561.

Adding to 30235221 its reverse (12253203), we get a palindrome (42488424).

The spelling of 30235221 in words is "thirty million, two hundred thirty-five thousand, two hundred twenty-one".