30230021220 has 48 divisors (see below), whose sum is σ = 96736069248. Its totient is φ = 6909719040.

The previous prime is 30230021203. The next prime is 30230021221. The reversal of 30230021220 is 2212003203.

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 30230021220.

It is not an unprimeable number, because it can be changed into a prime (30230021221) 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, 35987701 + ... + 35988540.

It is an arithmetic number, because the mean of its divisors is an integer number (2015334776).

Almost surely, 2^30230021220 is an apocalyptic number.

30230021220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30230021220 is an abundant number, since it is smaller than the sum of its proper divisors (66506048028).

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

30230021220 is a wasteful number, since it uses less digits than its factorization.

30230021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71976260 (or 71976258 counting only the distinct ones).

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

Adding to 30230021220 its reverse (2212003203), we get a palindrome (32442024423).

The spelling of 30230021220 in words is "thirty billion, two hundred thirty million, twenty-one thousand, two hundred twenty".