133011112 has 48 divisors (see below), whose sum is σ = 272479680. Its totient is φ = 60840000.

The previous prime is 133011107. The next prime is 133011113. The reversal of 133011112 is 211110331.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 133011092 and 133011101.

It is not an unprimeable number, because it can be changed into a prime (133011113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176737 + ... + 177487.

It is an arithmetic number, because the mean of its divisors is an integer number (5676660).

Almost surely, 2^133011112 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 133011112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136239840).

133011112 is an abundant number, since it is smaller than the sum of its proper divisors (139468568).

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

133011112 is a wasteful number, since it uses less digits than its factorization.

133011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 133011112 is about 11533.0443509075. The cubic root of 133011112 is about 510.4610875578.

Adding to 133011112 its reverse (211110331), we get a palindrome (344121443).

The spelling of 133011112 in words is "one hundred thirty-three million, eleven thousand, one hundred twelve".