133313212 has 12 divisors (see below), whose sum is σ = 233428216. Its totient is φ = 66619440.

The previous prime is 133313161. The next prime is 133313231. The reversal of 133313212 is 212313331.

It is a self number, because there is not a number n which added to its sum of digits gives 133313212.

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, 243 + ... + 16330.

Almost surely, 2^133313212 is an apocalyptic number.

It is an amenable number.

133313212 is a deficient number, since it is larger than the sum of its proper divisors (100115004).

133313212 is a wasteful number, since it uses less digits than its factorization.

133313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18588 (or 18586 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 133313212 is about 11546.1340716276. The cubic root of 133313212 is about 510.8472550237.

Adding to 133313212 its reverse (212313331), we get a palindrome (345626543).

The spelling of 133313212 in words is "one hundred thirty-three million, three hundred thirteen thousand, two hundred twelve".