12221331020309 has 4 divisors (see below), whose sum is σ = 12303353376300. Its totient is φ = 12139308664320.

The previous prime is 12221331020299. The next prime is 12221331020323. The reversal of 12221331020309 is 90302013312221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 690403119025 + 11530927901284 = 830905^2 + 3395722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221331020309 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 (12221331050309) 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, 41011177772 + ... + 41011178069.

It is an arithmetic number, because the mean of its divisors is an integer number (3075838344075).

Almost surely, 2^{12221331020309} is an apocalyptic number.

It is an amenable number.

12221331020309 is a deficient number, since it is larger than the sum of its proper divisors (82022355991).

12221331020309 is an equidigital number, since it uses as much as digits as its factorization.

12221331020309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82022355990.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 12221331020309 in words is "twelve trillion, two hundred twenty-one billion, three hundred thirty-one million, twenty thousand, three hundred nine".