133221044 has 24 divisors (see below), whose sum is σ = 269293248. Its totient is φ = 56992640.

The previous prime is 133221031. The next prime is 133221047. The reversal of 133221044 is 440122331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133221047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88304 + ... + 89799.

It is an arithmetic number, because the mean of its divisors is an integer number (11220552).

Almost surely, 2^133221044 is an apocalyptic number.

It is an amenable number.

133221044 is an abundant number, since it is smaller than the sum of its proper divisors (136072204).

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

133221044 is a wasteful number, since it uses less digits than its factorization.

133221044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178135 (or 178133 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 133221044 is about 11542.1420888845. The cubic root of 133221044 is about 510.7295006917.

Adding to 133221044 its reverse (440122331), we get a palindrome (573343375).

The spelling of 133221044 in words is "one hundred thirty-three million, two hundred twenty-one thousand, forty-four".