133122021 has 8 divisors (see below), whose sum is σ = 177679104. Its totient is φ = 88656480.

The previous prime is 133122007. The next prime is 133122049. The reversal of 133122021 is 120221331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133122021 - 2¹⁰ = 133120997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133122071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19416 + ... + 25361.

It is an arithmetic number, because the mean of its divisors is an integer number (22209888).

Almost surely, 2^133122021 is an apocalyptic number.

It is an amenable number.

133122021 is a deficient number, since it is larger than the sum of its proper divisors (44557083).

133122021 is an equidigital number, since it uses as much as digits as its factorization.

133122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45771.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 133122021 is about 11537.8516631130. The cubic root of 133122021 is about 510.6029278383.

Adding to 133122021 its reverse (120221331), we get a palindrome (253343352).

The spelling of 133122021 in words is "one hundred thirty-three million, one hundred twenty-two thousand, twenty-one".