30112213220 has 96 divisors (see below), whose sum is σ = 69417492480. Its totient is φ = 10921236480.

The previous prime is 30112213211. The next prime is 30112213223. The reversal of 30112213220 is 2231221103.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (30112213223) 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 31 ways as a sum of consecutive naturals, for example, 4798685 + ... + 4804955.

It is an arithmetic number, because the mean of its divisors is an integer number (723098880).

Almost surely, 2^30112213220 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 30112213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34708746240).

30112213220 is an abundant number, since it is smaller than the sum of its proper divisors (39305279260).

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

30112213220 is a wasteful number, since it uses less digits than its factorization.

30112213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813 (or 6811 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30112213220 its reverse (2231221103), we get a palindrome (32343434323).

The spelling of 30112213220 in words is "thirty billion, one hundred twelve million, two hundred thirteen thousand, two hundred twenty".