30120213220 has 24 divisors (see below), whose sum is σ = 66581524800. Its totient is φ = 11413975392.

The previous prime is 30120213217. The next prime is 30120213271. The reversal of 30120213220 is 2231202103.

It is a junction number, because it is equal to n+sod(n) for n = 30120213194 and 30120213203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39631480 + ... + 39632239.

It is an arithmetic number, because the mean of its divisors is an integer number (2774230200).

Almost surely, 2^30120213220 is an apocalyptic number.

It is an amenable number.

30120213220 is an abundant number, since it is smaller than the sum of its proper divisors (36461311580).

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

30120213220 is a wasteful number, since it uses less digits than its factorization.

30120213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79263747 (or 79263745 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30120213220 its reverse (2231202103), we get a palindrome (32351415323).

The spelling of 30120213220 in words is "thirty billion, one hundred twenty million, two hundred thirteen thousand, two hundred twenty".