133104221 has 8 divisors (see below), whose sum is σ = 136968480. Its totient is φ = 129274992.

The previous prime is 133104211. The next prime is 133104241. The reversal of 133104221 is 122401331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133104221 - 2²⁶ = 65995357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133104221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133104211) 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, 950 + ... + 16343.

It is an arithmetic number, because the mean of its divisors is an integer number (17121060).

Almost surely, 2^133104221 is an apocalyptic number.

It is an amenable number.

133104221 is a deficient number, since it is larger than the sum of its proper divisors (3864259).

133104221 is a wasteful number, since it uses less digits than its factorization.

133104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17515.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 133104221 is about 11537.0802632208. The cubic root of 133104221 is about 510.5801689259.

Adding to 133104221 its reverse (122401331), we get a palindrome (255505552).

The spelling of 133104221 in words is "one hundred thirty-three million, one hundred four thousand, two hundred twenty-one".