321100010213221 has 4 divisors (see below), whose sum is σ = 321947239792000. Its totient is φ = 320252780634444.

The previous prime is 321100010213173. The next prime is 321100010213231. The reversal of 321100010213221 is 122312010001123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321100010213221 - 2¹⁹ = 321100009688933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321100010213231) 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 3 ways as a sum of consecutive naturals, for example, 423614788821 + ... + 423614789578.

It is an arithmetic number, because the mean of its divisors is an integer number (80486809948000).

Almost surely, 2^{321100010213221} is an apocalyptic number.

It is an amenable number.

321100010213221 is a deficient number, since it is larger than the sum of its proper divisors (847229578779).

321100010213221 is an equidigital number, since it uses as much as digits as its factorization.

321100010213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847229578778.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 321100010213221 its reverse (122312010001123), we get a palindrome (443412020214344).

The spelling of 321100010213221 in words is "three hundred twenty-one trillion, one hundred billion, ten million, two hundred thirteen thousand, two hundred twenty-one".