12202001321 has 4 divisors (see below), whose sum is σ = 12263940612. Its totient is φ = 12140062032.

The previous prime is 12202001309. The next prime is 12202001359. The reversal of 12202001321 is 12310020221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12310020221 = 7069 ⋅1741409.

It can be written as a sum of positive squares in 2 ways, for example, as 9552325696 + 2649675625 = 97736^2 + 51475^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202001321 - 2²⁶ = 12134892457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202001296 and 12202001305.

It is not an unprimeable number, because it can be changed into a prime (12202001521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30969350 + ... + 30969743.

It is an arithmetic number, because the mean of its divisors is an integer number (3065985153).

Almost surely, 2^12202001321 is an apocalyptic number.

It is an amenable number.

12202001321 is a deficient number, since it is larger than the sum of its proper divisors (61939291).

12202001321 is an equidigital number, since it uses as much as digits as its factorization.

12202001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61939290.

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

Adding to 12202001321 its reverse (12310020221), we get a palindrome (24512021542).

The spelling of 12202001321 in words is "twelve billion, two hundred two million, one thousand, three hundred twenty-one".