133121304200 has 96 divisors (see below), whose sum is σ = 324233712000. Its totient is φ = 50761401600.

The previous prime is 133121304187. The next prime is 133121304209. The reversal of 133121304200 is 2403121331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (133121304209) 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, 312935 + ... + 603465.

It is an arithmetic number, because the mean of its divisors is an integer number (3377434500).

Almost surely, 2^133121304200 is an apocalyptic number.

133121304200 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 133121304200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162116856000).

133121304200 is an abundant number, since it is smaller than the sum of its proper divisors (191112407800).

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

133121304200 is a wasteful number, since it uses less digits than its factorization.

133121304200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290655 (or 290646 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 133121304200 its reverse (2403121331), we get a palindrome (135524425531).

The spelling of 133121304200 in words is "one hundred thirty-three billion, one hundred twenty-one million, three hundred four thousand, two hundred".