321121101321133 has 4 divisors (see below), whose sum is σ = 321121681318620. Its totient is φ = 321120521323648.

The previous prime is 321121101321121. The next prime is 321121101321187. The reversal of 321121101321133 is 331123101121123.

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 286925587898884 + 34195513422249 = 16938878^2 + 5847693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321121101321133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321121101321098 and 321121101321107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321121101321193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289167460 + ... + 290275837.

It is an arithmetic number, because the mean of its divisors is an integer number (80280420329655).

Almost surely, 2^{321121101321133} is an apocalyptic number.

It is an amenable number.

321121101321133 is a deficient number, since it is larger than the sum of its proper divisors (579997487).

321121101321133 is an equidigital number, since it uses as much as digits as its factorization.

321121101321133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579997486.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 321121101321133 its reverse (331123101121123), we get a palindrome (652244202442256).

The spelling of 321121101321133 in words is "three hundred twenty-one trillion, one hundred twenty-one billion, one hundred one million, three hundred twenty-one thousand, one hundred thirty-three".