133121224 has 16 divisors (see below), whose sum is σ = 250110000. Its totient is φ = 66425232.

The previous prime is 133121189. The next prime is 133121257. The reversal of 133121224 is 422121331.

It is a happy number.

133121224 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 12682 + ... + 20665.

It is an arithmetic number, because the mean of its divisors is an integer number (15631875).

Almost surely, 2^133121224 is an apocalyptic number.

It is an amenable number.

133121224 is a deficient number, since it is larger than the sum of its proper divisors (116988776).

133121224 is a wasteful number, since it uses less digits than its factorization.

133121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33852 (or 33848 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 133121224 is about 11537.8171245691. The cubic root of 133121224 is about 510.6019088450.

Adding to 133121224 its reverse (422121331), we get a palindrome (555242555).

The spelling of 133121224 in words is "one hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty-four".