30000000021200 has 240 divisors, whose sum is σ = 84392865760896. Its totient is φ = 10126728806400.

The previous prime is 30000000021191. The next prime is 30000000021221. The reversal of 30000000021200 is 212000000003.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2713349 + ... + 8207451.

Almost surely, 2^{30000000021200} 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 30000000021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42196432880448).

30000000021200 is an abundant number, since it is smaller than the sum of its proper divisors (54392865739696).

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

30000000021200 is a wasteful number, since it uses less digits than its factorization.

30000000021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5494222 (or 5494211 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

Adding to 30000000021200 its reverse (212000000003), we get a palindrome (30212000021203).

The spelling of 30000000021200 in words is "thirty trillion, twenty-one thousand, two hundred".