30021320220 has 24 divisors (see below), whose sum is σ = 84059696784. Its totient is φ = 8005685376.

The previous prime is 30021320213. The next prime is 30021320261. The reversal of 30021320220 is 2202312003.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30021320220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250177609 + ... + 250177728.

It is an arithmetic number, because the mean of its divisors is an integer number (3502487366).

Almost surely, 2^30021320220 is an apocalyptic number.

30021320220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30021320220 is an abundant number, since it is smaller than the sum of its proper divisors (54038376564).

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

30021320220 is a wasteful number, since it uses less digits than its factorization.

30021320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500355349 (or 500355347 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 30021320220 its reverse (2202312003), we get a palindrome (32223632223).

The spelling of 30021320220 in words is "thirty billion, twenty-one million, three hundred twenty thousand, two hundred twenty".