321220010201 has 4 divisors (see below), whose sum is σ = 321229232592. Its totient is φ = 321210787812.

The previous prime is 321220010171. The next prime is 321220010219. The reversal of 321220010201 is 102010022123.

It is a happy number.

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 321220010201 - 2¹⁴ = 321219993817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321220010231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4558751 + ... + 4628676.

It is an arithmetic number, because the mean of its divisors is an integer number (80307308148).

Almost surely, 2^321220010201 is an apocalyptic number.

It is an amenable number.

321220010201 is a deficient number, since it is larger than the sum of its proper divisors (9222391).

321220010201 is an equidigital number, since it uses as much as digits as its factorization.

321220010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222390.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 321220010201 its reverse (102010022123), we get a palindrome (423230032324).

The spelling of 321220010201 in words is "three hundred twenty-one billion, two hundred twenty million, ten thousand, two hundred one".