30271221 has 12 divisors (see below), whose sum is σ = 45136000. Its totient is φ = 19529640.

The previous prime is 30271211. The next prime is 30271229. The reversal of 30271221 is 12217203.

It is not a de Polignac number, because 30271221 - 2⁷ = 30271093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30271194 and 30271203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30271229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53971 + ... + 54528.

Almost surely, 2^30271221 is an apocalyptic number.

30271221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30271221 is a deficient number, since it is larger than the sum of its proper divisors (14864779).

30271221 is a wasteful number, since it uses less digits than its factorization.

30271221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108536 (or 108533 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 30271221 is about 5501.9288435966. The cubic root of 30271221 is about 311.6568280549.

Adding to 30271221 its reverse (12217203), we get a palindrome (42488424).

The spelling of 30271221 in words is "thirty million, two hundred seventy-one thousand, two hundred twenty-one".