133123220000 has 120 divisors (see below), whose sum is σ = 328184010000. Its totient is φ = 53138592000.

The previous prime is 133123219993. The next prime is 133123220003. The reversal of 133123220000 is 22321331.

It is not an unprimeable number, because it can be changed into a prime (133123220003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9973331 + ... + 9986669.

It is an arithmetic number, because the mean of its divisors is an integer number (2734866750).

Almost surely, 2^133123220000 is an apocalyptic number.

133123220000 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 133123220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164092005000).

133123220000 is an abundant number, since it is smaller than the sum of its proper divisors (195060790000).

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

133123220000 is an equidigital number, since it uses as much as digits as its factorization.

133123220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13868 (or 13845 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 133123220000 its reverse (22321331), we get a palindrome (133145541331).

The spelling of 133123220000 in words is "one hundred thirty-three billion, one hundred twenty-three million, two hundred twenty thousand".