133121130112 has 64 divisors (see below), whose sum is σ = 271979850240. Its totient is φ = 64863221760.

The previous prime is 133121130101. The next prime is 133121130127. The reversal of 133121130112 is 211031121331.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 133121130112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4745953 + ... + 4773919.

It is an arithmetic number, because the mean of its divisors is an integer number (4249685160).

Almost surely, 2^133121130112 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 133121130112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135989925120).

133121130112 is an abundant number, since it is smaller than the sum of its proper divisors (138858720128).

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

133121130112 is an equidigital number, since it uses as much as digits as its factorization.

133121130112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28929 (or 28917 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 133121130112 its reverse (211031121331), we get a palindrome (344152251443).

The spelling of 133121130112 in words is "one hundred thirty-three billion, one hundred twenty-one million, one hundred thirty thousand, one hundred twelve".