30321133220 has 48 divisors (see below), whose sum is σ = 75934672128. Its totient is φ = 9943824000.

The previous prime is 30321133217. The next prime is 30321133229. The reversal of 30321133220 is 2233112303.

It is a super-2 number, since 2×30321133220² (a number of 22 digits) contains 22 as substring.

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 = 30321133192 and 30321133201.

It is not an unprimeable number, because it can be changed into a prime (30321133229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4705031 + ... + 4711470.

It is an arithmetic number, because the mean of its divisors is an integer number (1581972336).

Almost surely, 2^30321133220 is an apocalyptic number.

It is an amenable number.

30321133220 is an abundant number, since it is smaller than the sum of its proper divisors (45613538908).

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

30321133220 is a wasteful number, since it uses less digits than its factorization.

30321133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416540 (or 9416538 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30321133220 its reverse (2233112303), we get a palindrome (32554245523).

The spelling of 30321133220 in words is "thirty billion, three hundred twenty-one million, one hundred thirty-three thousand, two hundred twenty".