321040440201 has 16 divisors (see below), whose sum is σ = 461046225024. Its totient is φ = 197535456384.

The previous prime is 321040440179. The next prime is 321040440221. The reversal of 321040440201 is 102044040123.

It is not a de Polignac number, because 321040440201 - 2⁶ = 321040440137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321040440221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299556 + ... + 855461.

It is an arithmetic number, because the mean of its divisors is an integer number (28815389064).

Almost surely, 2^321040440201 is an apocalyptic number.

It is an amenable number.

321040440201 is a deficient number, since it is larger than the sum of its proper divisors (140005784823).

321040440201 is a wasteful number, since it uses less digits than its factorization.

321040440201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162160.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 321040440201 its reverse (102044040123), we get a palindrome (423084480324).

The spelling of 321040440201 in words is "three hundred twenty-one billion, forty million, four hundred forty thousand, two hundred one".