133122001 has 4 divisors (see below), whose sum is σ = 135954432. Its totient is φ = 130289572.

The previous prime is 133121971. The next prime is 133122007. The reversal of 133122001 is 100221331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100221331 = 7 ⋅14317333.

It is a cyclic number.

It is not a de Polignac number, because 133122001 - 2⁵ = 133121969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133122007) 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, 1416145 + ... + 1416238.

It is an arithmetic number, because the mean of its divisors is an integer number (33988608).

Almost surely, 2^133122001 is an apocalyptic number.

It is an amenable number.

133122001 is a deficient number, since it is larger than the sum of its proper divisors (2832431).

133122001 is an equidigital number, since it uses as much as digits as its factorization.

133122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832430.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 133122001 is about 11537.8507964005. The cubic root of 133122001 is about 510.6029022676.

Adding to 133122001 its reverse (100221331), we get a palindrome (233343332).

It can be divided in two parts, 1331 and 22001, that added together give a palindrome (23332).

The spelling of 133122001 in words is "one hundred thirty-three million, one hundred twenty-two thousand, one".