12068826221 has 8 divisors (see below), whose sum is σ = 12222626040. Its totient is φ = 11915430912.

The previous prime is 12068826191. The next prime is 12068826281. The reversal of 12068826221 is 12262886021.

It can be written as a sum of positive squares in 4 ways, for example, as 401802025 + 11667024196 = 20045^2 + 108014^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12068826221 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 (12068826281) 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, 40850 + ... + 160643.

It is an arithmetic number, because the mean of its divisors is an integer number (1527828255).

Almost surely, 2^12068826221 is an apocalyptic number.

It is an amenable number.

12068826221 is a deficient number, since it is larger than the sum of its proper divisors (153799819).

12068826221 is an equidigital number, since it uses as much as digits as its factorization.

12068826221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202255.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 12068826221 in words is "twelve billion, sixty-eight million, eight hundred twenty-six thousand, two hundred twenty-one".