321212023121 has 16 divisors (see below), whose sum is σ = 352753833600. Its totient is φ = 290061482880.

The previous prime is 321212023087. The next prime is 321212023129. The reversal of 321212023121 is 121320212123.

It is a cyclic number.

It is not a de Polignac number, because 321212023121 - 2¹⁰ = 321212022097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321212023093 and 321212023102.

It is not an unprimeable number, because it can be changed into a prime (321212023129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5929460 + ... + 5983386.

It is an arithmetic number, because the mean of its divisors is an integer number (22047114600).

Almost surely, 2^321212023121 is an apocalyptic number.

It is an amenable number.

321212023121 is a deficient number, since it is larger than the sum of its proper divisors (31541810479).

321212023121 is a wasteful number, since it uses less digits than its factorization.

321212023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57544.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 321212023121 its reverse (121320212123), we get a palindrome (442532235244).

The spelling of 321212023121 in words is "three hundred twenty-one billion, two hundred twelve million, twenty-three thousand, one hundred twenty-one".