133521322 has 48 divisors (see below), whose sum is σ = 235569600. Its totient is φ = 56548800.

The previous prime is 133521317. The next prime is 133521337. The reversal of 133521322 is 223125331.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 133521293 and 133521302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326254 + ... + 326662.

It is an arithmetic number, because the mean of its divisors is an integer number (4907700).

Almost surely, 2^133521322 is an apocalyptic number.

133521322 is a deficient number, since it is larger than the sum of its proper divisors (102048278).

133521322 is a wasteful number, since it uses less digits than its factorization.

133521322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 512 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 133521322 is about 11555.1426646321. The cubic root of 133521322 is about 511.1129379932.

Adding to 133521322 its reverse (223125331), we get a palindrome (356646653).

The spelling of 133521322 in words is "one hundred thirty-three million, five hundred twenty-one thousand, three hundred twenty-two".