30120222220 has 96 divisors (see below), whose sum is σ = 71176262976. Its totient is φ = 10610380800.

The previous prime is 30120222191. The next prime is 30120222221. The reversal of 30120222220 is 2222202103.

It is a junction number, because it is equal to n+sod(n) for n = 30120222194 and 30120222203.

It is not an unprimeable number, because it can be changed into a prime (30120222221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1888680 + ... + 1904560.

It is an arithmetic number, because the mean of its divisors is an integer number (741419406).

Almost surely, 2^30120222220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30120222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35588131488).

30120222220 is an abundant number, since it is smaller than the sum of its proper divisors (41056040756).

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

30120222220 is a wasteful number, since it uses less digits than its factorization.

30120222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171 (or 16169 counting only the distinct ones).

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

Adding to 30120222220 its reverse (2222202103), we get a palindrome (32342424323).

The spelling of 30120222220 in words is "thirty billion, one hundred twenty million, two hundred twenty-two thousand, two hundred twenty".