30330331220 has 96 divisors (see below), whose sum is σ = 74552045568. Its totient is φ = 10148084352.

The previous prime is 30330331183. The next prime is 30330331301. The reversal of 30330331220 is 2213303303.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30330331192 and 30330331201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13260917 + ... + 13263203.

It is an arithmetic number, because the mean of its divisors is an integer number (776583808).

Almost surely, 2^30330331220 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 30330331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37276022784).

30330331220 is an abundant number, since it is smaller than the sum of its proper divisors (44221714348).

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

30330331220 is a wasteful number, since it uses less digits than its factorization.

30330331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4547 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 30330331220 its reverse (2213303303), we get a palindrome (32543634523).

The spelling of 30330331220 in words is "thirty billion, three hundred thirty million, three hundred thirty-one thousand, two hundred twenty".