133223212 has 12 divisors (see below), whose sum is σ = 245411320. Its totient is φ = 63105696.

The previous prime is 133223183. The next prime is 133223219. The reversal of 133223212 is 212322331.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 133223212.

It is not an unprimeable number, because it can be changed into a prime (133223219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876393 + ... + 876544.

Almost surely, 2^133223212 is an apocalyptic number.

It is an amenable number.

133223212 is a deficient number, since it is larger than the sum of its proper divisors (112188108).

133223212 is a wasteful number, since it uses less digits than its factorization.

133223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752960 (or 1752958 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 133223212 is about 11542.2360052115. The cubic root of 133223212 is about 510.7322711638.

Adding to 133223212 its reverse (212322331), we get a palindrome (345545543).

The spelling of 133223212 in words is "one hundred thirty-three million, two hundred twenty-three thousand, two hundred twelve".