30121311200 has 144 divisors (see below), whose sum is σ = 76315115520. Its totient is φ = 11596992000.

The previous prime is 30121311139. The next prime is 30121311217. The reversal of 30121311200 is 211312103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4733621 + ... + 4739979.

It is an arithmetic number, because the mean of its divisors is an integer number (529966080).

Almost surely, 2^30121311200 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 30121311200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38157557760).

30121311200 is an abundant number, since it is smaller than the sum of its proper divisors (46193804320).

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

30121311200 is a wasteful number, since it uses less digits than its factorization.

30121311200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601 (or 6588 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30121311200 its reverse (211312103), we get a palindrome (30332623303).

The spelling of 30121311200 in words is "thirty billion, one hundred twenty-one million, three hundred eleven thousand, two hundred".