12220222009 has 4 divisors (see below), whose sum is σ = 12223213200. Its totient is φ = 12217230820.

The previous prime is 12220221983. The next prime is 12220222019. The reversal of 12220222009 is 90022202221.

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: 90022202221 = 7 ⋅12860314603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220222009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220222019) 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, 1489459 + ... + 1497640.

It is an arithmetic number, because the mean of its divisors is an integer number (3055803300).

Almost surely, 2^12220222009 is an apocalyptic number.

It is an amenable number.

12220222009 is a deficient number, since it is larger than the sum of its proper divisors (2991191).

12220222009 is an equidigital number, since it uses as much as digits as its factorization.

12220222009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991190.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 12220222009 in words is "twelve billion, two hundred twenty million, two hundred twenty-two thousand, nine".