321100352105 has 32 divisors (see below), whose sum is σ = 425190735648. Its totient is φ = 231277363200.

The previous prime is 321100352081. The next prime is 321100352113. The reversal of 321100352105 is 501253001123.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 281498158096 + 39602194009 = 530564^2 + 199003^2 .

It is not a de Polignac number, because 321100352105 - 2²⁶ = 321033243241 is a prime.

It is a super-2 number, since 2×321100352105² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12141857 + ... + 12168273.

It is an arithmetic number, because the mean of its divisors is an integer number (13287210489).

Almost surely, 2^321100352105 is an apocalyptic number.

It is an amenable number.

321100352105 is a deficient number, since it is larger than the sum of its proper divisors (104090383543).

321100352105 is a wasteful number, since it uses less digits than its factorization.

321100352105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31037.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 321100352105 its reverse (501253001123), we get a palindrome (822353353228).

The spelling of 321100352105 in words is "three hundred twenty-one billion, one hundred million, three hundred fifty-two thousand, one hundred five".