30111222 has 16 divisors (see below), whose sum is σ = 62299440. Its totient is φ = 9690912.

The previous prime is 30111217. The next prime is 30111239. The reversal of 30111222 is 22211103.

It is a junction number, because it is equal to n+sod(n) for n = 30111198 and 30111207.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 86353 + ... + 86700.

It is an arithmetic number, because the mean of its divisors is an integer number (3893715).

Almost surely, 2^30111222 is an apocalyptic number.

30111222 is an abundant number, since it is smaller than the sum of its proper divisors (32188218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30111222 is a wasteful number, since it uses less digits than its factorization.

30111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173087.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30111222 is about 5487.3693150726. The cubic root of 30111222 is about 311.1067688264.

Adding to 30111222 its reverse (22211103), we get a palindrome (52322325).

The spelling of 30111222 in words is "thirty million, one hundred eleven thousand, two hundred twenty-two".