12220200221 has 4 divisors (see below), whose sum is σ = 12230376444. Its totient is φ = 12210024000.

The previous prime is 12220200193. The next prime is 12220200259. The reversal of 12220200221 is 12200202221.

12220200221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1847796196 + 10372404025 = 42986^2 + 101845^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220200221 - 2¹⁸ = 12219938077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220200196 and 12220200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220202221) 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, 5086310 + ... + 5088711.

It is an arithmetic number, because the mean of its divisors is an integer number (3057594111).

Almost surely, 2^12220200221 is an apocalyptic number.

It is an amenable number.

12220200221 is a deficient number, since it is larger than the sum of its proper divisors (10176223).

12220200221 is a wasteful number, since it uses less digits than its factorization.

12220200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176222.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12220200221 its reverse (12200202221), we get a palindrome (24420402442).

The spelling of 12220200221 in words is "twelve billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".