33121313201 has 4 divisors (see below), whose sum is σ = 33121768512. Its totient is φ = 33120857892.

The previous prime is 33121313153. The next prime is 33121313237. The reversal of 33121313201 is 10231312133.

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: 10231312133 = 7 ⋅1461616019.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33121313201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33121313501) 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 3 ways as a sum of consecutive naturals, for example, 91325 + ... + 273098.

It is an arithmetic number, because the mean of its divisors is an integer number (8280442128).

Almost surely, 2^33121313201 is an apocalyptic number.

It is an amenable number.

33121313201 is a deficient number, since it is larger than the sum of its proper divisors (455311).

33121313201 is an equidigital number, since it uses as much as digits as its factorization.

33121313201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455310.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 33121313201 its reverse (10231312133), we get a palindrome (43352625334).

The spelling of 33121313201 in words is "thirty-three billion, one hundred twenty-one million, three hundred thirteen thousand, two hundred one".