133320133321 has 4 divisors (see below), whose sum is σ = 133636808644. Its totient is φ = 133003458000.

The previous prime is 133320133273. The next prime is 133320133327. The reversal of 133320133321 is 123331023331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3746052025 + 129574081296 = 61205^2 + 359964^2 .

It is a cyclic number.

It is not a de Polignac number, because 133320133321 - 2⁹ = 133320132809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133320133327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158337030 + ... + 158337871.

It is an arithmetic number, because the mean of its divisors is an integer number (33409202161).

Almost surely, 2^133320133321 is an apocalyptic number.

It is an amenable number.

133320133321 is a deficient number, since it is larger than the sum of its proper divisors (316675323).

133320133321 is an equidigital number, since it uses as much as digits as its factorization.

133320133321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316675322.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 133320133321 its reverse (123331023331), we get a palindrome (256651156652).

The spelling of 133320133321 in words is "one hundred thirty-three billion, three hundred twenty million, one hundred thirty-three thousand, three hundred twenty-one".