133264121 has 8 divisors (see below), whose sum is σ = 137048520. Its totient is φ = 129489408.

The previous prime is 133264111. The next prime is 133264123. The reversal of 133264121 is 121462331.

It can be written as a sum of positive squares in 4 ways, for example, as 3759721 + 129504400 = 1939^2 + 11380^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 133264121 - 2⁶ = 133264057 is a prime.

It is a super-3 number, since 3×133264121³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133264123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32435 + ... + 36311.

It is an arithmetic number, because the mean of its divisors is an integer number (17131065).

Almost surely, 2^133264121 is an apocalyptic number.

It is an amenable number.

133264121 is a deficient number, since it is larger than the sum of its proper divisors (3784399).

133264121 is an equidigital number, since it uses as much as digits as its factorization.

133264121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843.

The product of its digits is 864, while the sum is 23.

The square root of 133264121 is about 11544.0080128177. The cubic root of 133264121 is about 510.7845428561.

The spelling of 133264121 in words is "one hundred thirty-three million, two hundred sixty-four thousand, one hundred twenty-one".