133335221121 has 20 divisors (see below), whose sum is σ = 207839767872. Its totient is φ = 85025357208.

The previous prime is 133335221099. The next prime is 133335221141. The reversal of 133335221121 is 121122533331.

133335221121 is a `hidden beast` number, since 13 + 3 + 3 + 3 + 522 + 1 + 121 = 666.

It is not a de Polignac number, because 133335221121 - 2³³ = 124745286529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133335221141) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35783221 + ... + 35786946.

Almost surely, 2^133335221121 is an apocalyptic number.

It is an amenable number.

133335221121 is a deficient number, since it is larger than the sum of its proper divisors (74504546751).

133335221121 is an equidigital number, since it uses as much as digits as its factorization.

133335221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71570202 (or 71570193 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

Adding to 133335221121 its reverse (121122533331), we get a palindrome (254457754452).

The spelling of 133335221121 in words is "one hundred thirty-three billion, three hundred thirty-five million, two hundred twenty-one thousand, one hundred twenty-one".