333121232201221 has 4 divisors (see below), whose sum is σ = 333121393615500. Its totient is φ = 333121070786944.

The previous prime is 333121232201137. The next prime is 333121232201227. The reversal of 333121232201221 is 122102232121333.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212294662012225 + 120826570188996 = 14570335^2 + 10992114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-333121232201221 is a prime.

It is a super-2 number, since 2×333121232201221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 333121232201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333121232201227) 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, 77570866 + ... + 81752563.

It is an arithmetic number, because the mean of its divisors is an integer number (83280348403875).

Almost surely, 2^{333121232201221} is an apocalyptic number.

It is an amenable number.

333121232201221 is a deficient number, since it is larger than the sum of its proper divisors (161414279).

333121232201221 is a wasteful number, since it uses less digits than its factorization.

333121232201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161414278.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 333121232201221 its reverse (122102232121333), we get a palindrome (455223464322554).

The spelling of 333121232201221 in words is "three hundred thirty-three trillion, one hundred twenty-one billion, two hundred thirty-two million, two hundred one thousand, two hundred twenty-one".