12200001000221 has 4 divisors (see below), whose sum is σ = 12206606308512. Its totient is φ = 12193395691932.

The previous prime is 12200001000193. The next prime is 12200001000233. The reversal of 12200001000221 is 12200010000221.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 12200001000221 - 2¹⁴ = 12200000983837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200001000821) 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, 3302651375 + ... + 3302655068.

It is an arithmetic number, because the mean of its divisors is an integer number (3051651577128).

Almost surely, 2^{12200001000221} is an apocalyptic number.

It is an amenable number.

12200001000221 is a deficient number, since it is larger than the sum of its proper divisors (6605308291).

12200001000221 is an equidigital number, since it uses as much as digits as its factorization.

12200001000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6605308290.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12200001000221 its reverse (12200010000221), we get a palindrome (24400011000442).

Subtracting 12200001000221 from its reverse (12200010000221), we obtain a square (9000000 = 3000²).

The spelling of 12200001000221 in words is "twelve trillion, two hundred billion, one million, two hundred twenty-one", and thus it is an aban number.