12200100321 has 4 divisors (see below), whose sum is σ = 16266800432. Its totient is φ = 8133400212.

The previous prime is 12200100259. The next prime is 12200100349. The reversal of 12200100321 is 12300100221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12300100221 = 3 ⋅4100033407.

It is not a de Polignac number, because 12200100321 - 2⁷ = 12200100193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200100297 and 12200100306.

It is not an unprimeable number, because it can be changed into a prime (12200100421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033350051 + ... + 2033350056.

It is an arithmetic number, because the mean of its divisors is an integer number (4066700108).

Almost surely, 2^12200100321 is an apocalyptic number.

It is an amenable number.

12200100321 is a deficient number, since it is larger than the sum of its proper divisors (4066700111).

12200100321 is an equidigital number, since it uses as much as digits as its factorization.

12200100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066700110.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12200100321 its reverse (12300100221), we get a palindrome (24500200542).

The spelling of 12200100321 in words is "twelve billion, two hundred million, one hundred thousand, three hundred twenty-one".