133321001 has 4 divisors (see below), whose sum is σ = 145441104. Its totient is φ = 121200900.

The previous prime is 133320997. The next prime is 133321039. The reversal of 133321001 is 100123331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133321001 - 2² = 133320997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133321301) 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, 6060035 + ... + 6060056.

It is an arithmetic number, because the mean of its divisors is an integer number (36360276).

Almost surely, 2^133321001 is an apocalyptic number.

133321001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133321001 is a deficient number, since it is larger than the sum of its proper divisors (12120103).

133321001 is a wasteful number, since it uses less digits than its factorization.

133321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12120102.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 133321001 is about 11546.4713657463. The cubic root of 133321001 is about 510.8572038045.

Adding to 133321001 its reverse (100123331), we get a palindrome (233444332).

The spelling of 133321001 in words is "one hundred thirty-three million, three hundred twenty-one thousand, one".