12210010221 has 4 divisors (see below), whose sum is σ = 16280013632. Its totient is φ = 8140006812.

The previous prime is 12210010193. The next prime is 12210010271. The reversal of 12210010221 is 12201001221.

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 not a de Polignac number, because 12210010221 - 2¹⁵ = 12209977453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210010197 and 12210010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210010271) 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, 2035001701 + ... + 2035001706.

It is an arithmetic number, because the mean of its divisors is an integer number (4070003408).

Almost surely, 2^12210010221 is an apocalyptic number.

It is an amenable number.

12210010221 is a deficient number, since it is larger than the sum of its proper divisors (4070003411).

12210010221 is an equidigital number, since it uses as much as digits as its factorization.

12210010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070003410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12210010221 its reverse (12201001221), we get a palindrome (24411011442).

The spelling of 12210010221 in words is "twelve billion, two hundred ten million, ten thousand, two hundred twenty-one".