12212110209 has 32 divisors (see below), whose sum is σ = 18522025984. Its totient is φ = 7103557440.

The previous prime is 12212110193. The next prime is 12212110223. The reversal of 12212110209 is 90201121221.

It is not a de Polignac number, because 12212110209 - 2⁴ = 12212110193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12212110109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65467 + ... + 169440.

It is an arithmetic number, because the mean of its divisors is an integer number (578813312).

Almost surely, 2^12212110209 is an apocalyptic number.

It is an amenable number.

12212110209 is a deficient number, since it is larger than the sum of its proper divisors (6309915775).

12212110209 is a wasteful number, since it uses less digits than its factorization.

12212110209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234997.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 12212110209 in words is "twelve billion, two hundred twelve million, one hundred ten thousand, two hundred nine".