321212121113 has 8 divisors (see below), whose sum is σ = 345969862728. Its totient is φ = 296461396224.

The previous prime is 321212121053. The next prime is 321212121157. The reversal of 321212121113 is 311121212123.

It can be written as a sum of positive squares in 4 ways, for example, as 14769054784 + 306443066329 = 121528^2 + 553573^2 .

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 321212121113 - 2³⁰ = 320138379289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321212121613) 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, 1658906 + ... + 1842387.

It is an arithmetic number, because the mean of its divisors is an integer number (43246232841).

Almost surely, 2^321212121113 is an apocalyptic number.

It is an amenable number.

321212121113 is a deficient number, since it is larger than the sum of its proper divisors (24757741615).

321212121113 is a wasteful number, since it uses less digits than its factorization.

321212121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508363.

The product of its digits is 144, while the sum is 20.

Adding to 321212121113 its reverse (311121212123), we get a palindrome (632333333236).

The spelling of 321212121113 in words is "three hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred thirteen".