12203030221 has 4 divisors (see below), whose sum is σ = 12242017852. Its totient is φ = 12164042592.

The previous prime is 12203030201. The next prime is 12203030233.

12203030221 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 751034025 + 11451996196 = 27405^2 + 107014^2 .

It is a cyclic number.

It is not a de Polignac number, because 12203030221 - 2⁷ = 12203030093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12203030195 and 12203030204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203030201) 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, 19493346 + ... + 19493971.

It is an arithmetic number, because the mean of its divisors is an integer number (3060504463).

Almost surely, 2^12203030221 is an apocalyptic number.

It is an amenable number.

12203030221 is a deficient number, since it is larger than the sum of its proper divisors (38987631).

12203030221 is an equidigital number, since it uses as much as digits as its factorization.

12203030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38987630.

The product of its (nonzero) digits is 144, while the sum is 16.

It can be divided in two parts, 122030 and 30221, that added together give a palindrome (152251).

The spelling of 12203030221 in words is "twelve billion, two hundred three million, thirty thousand, two hundred twenty-one".