30021103200 has 144 divisors (see below), whose sum is σ = 106602302016. Its totient is φ = 7277836800.

The previous prime is 30021103187. The next prime is 30021103201. The reversal of 30021103200 is 230112003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021103201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 542182 + ... + 594981.

It is an arithmetic number, because the mean of its divisors is an integer number (740293764).

Almost surely, 2^30021103200 is an apocalyptic number.

30021103200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30021103200 is an abundant number, since it is smaller than the sum of its proper divisors (76581198816).

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

30021103200 is a wasteful number, since it uses less digits than its factorization.

30021103200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137197 (or 1137184 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 30021103200 its reverse (230112003), we get a palindrome (30251215203).

The spelling of 30021103200 in words is "thirty billion, twenty-one million, one hundred three thousand, two hundred".