133521126330 has 128 divisors (see below), whose sum is σ = 341367436800. Its totient is φ = 33359606784.

The previous prime is 133521126307. The next prime is 133521126331. The reversal of 133521126330 is 33621125331.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (133521126331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12516579 + ... + 12527241.

It is an arithmetic number, because the mean of its divisors is an integer number (2666933100).

Almost surely, 2^133521126330 is an apocalyptic number.

133521126330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133521126330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170683718400).

133521126330 is an abundant number, since it is smaller than the sum of its proper divisors (207846310470).

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

133521126330 is a wasteful number, since it uses less digits than its factorization.

133521126330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11128.

The product of its (nonzero) digits is 9720, while the sum is 30.

Subtracting from 133521126330 its reverse (33621125331), we obtain a palindrome (99900000999).

The spelling of 133521126330 in words is "one hundred thirty-three billion, five hundred twenty-one million, one hundred twenty-six thousand, three hundred thirty".