12212010209 has 16 divisors (see below), whose sum is σ = 14012496000. Its totient is φ = 10425590784.

The previous prime is 12212010193. The next prime is 12212010227. The reversal of 12212010209 is 90201021221.

It is a happy number.

It is not a de Polignac number, because 12212010209 - 2⁴ = 12212010193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212010289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1942379 + ... + 1948655.

It is an arithmetic number, because the mean of its divisors is an integer number (875781000).

Almost surely, 2^12212010209 is an apocalyptic number.

It is an amenable number.

12212010209 is a deficient number, since it is larger than the sum of its proper divisors (1800485791).

12212010209 is an equidigital number, since it uses as much as digits as its factorization.

12212010209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7352.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12212010209 in words is "twelve billion, two hundred twelve million, ten thousand, two hundred nine".