133212112 has 20 divisors (see below), whose sum is σ = 281562336. Its totient is φ = 60550880.

The previous prime is 133212089. The next prime is 133212127. The reversal of 133212112 is 211212331.

It is a super-3 number, since 3×133212112³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378268 + ... + 378619.

Almost surely, 2^133212112 is an apocalyptic number.

It is an amenable number.

133212112 is an abundant number, since it is smaller than the sum of its proper divisors (148350224).

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

133212112 is a wasteful number, since it uses less digits than its factorization.

133212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756906 (or 756900 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 133212112 is about 11541.7551524887. The cubic root of 133212112 is about 510.7180862342.

Adding to 133212112 its reverse (211212331), we get a palindrome (344424443).

The spelling of 133212112 in words is "one hundred thirty-three million, two hundred twelve thousand, one hundred twelve".