133112120100 has 144 divisors (see below), whose sum is σ = 399495805632. Its totient is φ = 34195875840.

The previous prime is 133112120081. The next prime is 133112120101. The reversal of 133112120100 is 1021211331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 133112120100.

It is not an unprimeable number, because it can be changed into a prime (133112120101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 871024 + ... + 1012376.

It is an arithmetic number, because the mean of its divisors is an integer number (2774276428).

Almost surely, 2^133112120100 is an apocalyptic number.

133112120100 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 133112120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199747902816).

133112120100 is an abundant number, since it is smaller than the sum of its proper divisors (266383685532).

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

133112120100 is a wasteful number, since it uses less digits than its factorization.

133112120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141486 (or 141479 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 133112120100 its reverse (1021211331), we get a palindrome (134133331431).

The spelling of 133112120100 in words is "one hundred thirty-three billion, one hundred twelve million, one hundred twenty thousand, one hundred".