133121203200 has 396 divisors, whose sum is σ = 497380027248. Its totient is φ = 33954201600.

The previous prime is 133121203199. The next prime is 133121203211. The reversal of 133121203200 is 2302121331.

133121203200 is a `hidden beast` number, since 1 + 331 + 2 + 12 + 0 + 320 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5286640 + ... + 5311760.

Almost surely, 2^133121203200 is an apocalyptic number.

133121203200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133121203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248690013624).

133121203200 is an abundant number, since it is smaller than the sum of its proper divisors (364258824048).

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

133121203200 is a wasteful number, since it uses less digits than its factorization.

133121203200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25180 (or 25154 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 133121203200 its reverse (2302121331), we get a palindrome (135423324531).

The spelling of 133121203200 in words is "one hundred thirty-three billion, one hundred twenty-one million, two hundred three thousand, two hundred".