321400204011 has 24 divisors (see below), whose sum is σ = 474301461504. Its totient is φ = 209628684720.

The previous prime is 321400203989. The next prime is 321400204019. The reversal of 321400204011 is 110402004123.

It is not a de Polignac number, because 321400204011 - 2⁵ = 321400203979 is a prime.

It is a super-2 number, since 2×321400204011² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321400204019) 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 23 ways as a sum of consecutive naturals, for example, 987600 + ... + 1272066.

It is an arithmetic number, because the mean of its divisors is an integer number (19762560896).

Almost surely, 2^321400204011 is an apocalyptic number.

321400204011 is a deficient number, since it is larger than the sum of its proper divisors (152901257493).

321400204011 is a wasteful number, since it uses less digits than its factorization.

321400204011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287191 (or 287188 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 321400204011 its reverse (110402004123), we get a palindrome (431802208134).

The spelling of 321400204011 in words is "three hundred twenty-one billion, four hundred million, two hundred four thousand, eleven".