30421222 has 16 divisors (see below), whose sum is σ = 49310352. Its totient is φ = 13992480.

The previous prime is 30421207. The next prime is 30421247. The reversal of 30421222 is 22212403.

It is a junction number, because it is equal to n+sod(n) for n = 30421196 and 30421205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6397 + ... + 10087.

It is an arithmetic number, because the mean of its divisors is an integer number (3081897).

Almost surely, 2^30421222 is an apocalyptic number.

30421222 is a deficient number, since it is larger than the sum of its proper divisors (18889130).

30421222 is a wasteful number, since it uses less digits than its factorization.

30421222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30421222 is about 5515.5436722049. The cubic root of 30421222 is about 312.1707576668.

Adding to 30421222 its reverse (22212403), we get a palindrome (52633625).

The spelling of 30421222 in words is "thirty million, four hundred twenty-one thousand, two hundred twenty-two".