133012120321 has 4 divisors (see below), whose sum is σ = 133048695892. Its totient is φ = 132975544752.

The previous prime is 133012120313. The next prime is 133012120349. The reversal of 133012120321 is 123021210331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123021210331 = 83 ⋅1482183257.

It can be written as a sum of positive squares in 2 ways, for example, as 43170450625 + 89841669696 = 207775^2 + 299736^2 .

It is a cyclic number.

It is not a de Polignac number, because 133012120321 - 2³ = 133012120313 is a prime.

It is a super-3 number, since 3×133012120321³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133012120301) 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, 18282330 + ... + 18289603.

It is an arithmetic number, because the mean of its divisors is an integer number (33262173973).

Almost surely, 2^133012120321 is an apocalyptic number.

It is an amenable number.

133012120321 is a deficient number, since it is larger than the sum of its proper divisors (36575571).

133012120321 is an equidigital number, since it uses as much as digits as its factorization.

133012120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36575570.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 133012120321 its reverse (123021210331), we get a palindrome (256033330652).

The spelling of 133012120321 in words is "one hundred thirty-three billion, twelve million, one hundred twenty thousand, three hundred twenty-one".