321320000001 has 64 divisors (see below), whose sum is σ = 575342401536. Its totient is φ = 154049472000.

The previous prime is 321319999991. The next prime is 321320000017. The reversal of 321320000001 is 100000023123.

It is a happy number.

It is not a de Polignac number, because 321320000001 - 2¹⁰ = 321319998977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321320008001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27222301 + ... + 27234101.

It is an arithmetic number, because the mean of its divisors is an integer number (8989725024).

Almost surely, 2^321320000001 is an apocalyptic number.

It is an amenable number.

321320000001 is a deficient number, since it is larger than the sum of its proper divisors (254022401535).

321320000001 is a wasteful number, since it uses less digits than its factorization.

321320000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20902.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 321320000001 its reverse (100000023123), we get a palindrome (421320023124).

The spelling of 321320000001 in words is "three hundred twenty-one billion, three hundred twenty million, one", and thus it is an aban number.