133015212 has 36 divisors (see below), whose sum is σ = 366800616. Its totient is φ = 40307520.

The previous prime is 133015189. The next prime is 133015229. The reversal of 133015212 is 212510331.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×133015212³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167553 + ... + 168344.

It is an arithmetic number, because the mean of its divisors is an integer number (10188906).

Almost surely, 2^133015212 is an apocalyptic number.

133015212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133015212 is an abundant number, since it is smaller than the sum of its proper divisors (233785404).

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

133015212 is a wasteful number, since it uses less digits than its factorization.

133015212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335918 (or 335913 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 133015212 is about 11533.2220996563. Note that the first 3 decimals coincide. The cubic root of 133015212 is about 510.4663324052.

Adding to 133015212 its reverse (212510331), we get a palindrome (345525543).

The spelling of 133015212 in words is "one hundred thirty-three million, fifteen thousand, two hundred twelve".