30121133200 has 120 divisors (see below), whose sum is σ = 76725471200. Its totient is φ = 11331809280.

The previous prime is 30121133183. The next prime is 30121133227. The reversal of 30121133200 is 233112103.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1042144 + ... + 1070656.

Almost surely, 2^30121133200 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 30121133200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38362735600).

30121133200 is an abundant number, since it is smaller than the sum of its proper divisors (46604338000).

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

30121133200 is a wasteful number, since it uses less digits than its factorization.

30121133200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28689 (or 28678 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30121133200 its reverse (233112103), we get a palindrome (30354245303).

The spelling of 30121133200 in words is "thirty billion, one hundred twenty-one million, one hundred thirty-three thousand, two hundred".