133133323221 has 16 divisors (see below), whose sum is σ = 204035745600. Its totient is φ = 85695012144.

The previous prime is 133133323207. The next prime is 133133323223. The reversal of 133133323221 is 122323331331.

133133323221 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 3 + 332 + 322 + 1 = 666.

It is not a de Polignac number, because 133133323221 - 2⁵ = 133133323189 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133133323223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85014111 + ... + 85015676.

It is an arithmetic number, because the mean of its divisors is an integer number (12752234100).

Almost surely, 2^133133323221 is an apocalyptic number.

It is an amenable number.

133133323221 is a deficient number, since it is larger than the sum of its proper divisors (70902422379).

133133323221 is a wasteful number, since it uses less digits than its factorization.

133133323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170029825 (or 170029819 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

Adding to 133133323221 its reverse (122323331331), we get a palindrome (255456654552).

The spelling of 133133323221 in words is "one hundred thirty-three billion, one hundred thirty-three million, three hundred twenty-three thousand, two hundred twenty-one".