12322020221 has 16 divisors (see below), whose sum is σ = 14877872640. Its totient is φ = 9980557440.

The previous prime is 12322020133. The next prime is 12322020241. The reversal of 12322020221 is 12202022321.

It is a de Polignac number, because none of the positive numbers 2^k-12322020221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12322020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322020241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636200 + ... + 655281.

It is an arithmetic number, because the mean of its divisors is an integer number (929867040).

Almost surely, 2^12322020221 is an apocalyptic number.

It is an amenable number.

12322020221 is a deficient number, since it is larger than the sum of its proper divisors (2555852419).

12322020221 is a wasteful number, since it uses less digits than its factorization.

12322020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291564.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12322020221 its reverse (12202022321), we get a palindrome (24524042542).

The spelling of 12322020221 in words is "twelve billion, three hundred twenty-two million, twenty thousand, two hundred twenty-one".