12221302309 has 8 divisors (see below), whose sum is σ = 12260955672. Its totient is φ = 12181678080.

The previous prime is 12221302307. The next prime is 12221302321. The reversal of 12221302309 is 90320312221.

It can be written as a sum of positive squares in 4 ways, for example, as 264973284 + 11956329025 = 16278^2 + 109345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221302309 - 2¹ = 12221302307 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 (12221302307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096167 + ... + 1107259.

It is an arithmetic number, because the mean of its divisors is an integer number (1532619459).

Almost surely, 2^12221302309 is an apocalyptic number.

It is an amenable number.

12221302309 is a deficient number, since it is larger than the sum of its proper divisors (39653363).

12221302309 is a wasteful number, since it uses less digits than its factorization.

12221302309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14567.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 12221302309 in words is "twelve billion, two hundred twenty-one million, three hundred two thousand, three hundred nine".