12112122000221 has 8 divisors (see below), whose sum is σ = 12200717647800. Its totient is φ = 12023800219648.

The previous prime is 12112122000203. The next prime is 12112122000229. The reversal of 12112122000221 is 12200022121121.

It can be written as a sum of positive squares in 4 ways, for example, as 2025057072025 + 10087064928196 = 1423045^2 + 3176014^2 .

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 12112122000221 - 2²² = 12112117805917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12112122000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112122000229) 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, 68377976 + ... + 68554881.

It is an arithmetic number, because the mean of its divisors is an integer number (1525089705975).

Almost surely, 2^{12112122000221} is an apocalyptic number.

It is an amenable number.

12112122000221 is a deficient number, since it is larger than the sum of its proper divisors (88595647579).

12112122000221 is a wasteful number, since it uses less digits than its factorization.

12112122000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136933503.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12112122000221 its reverse (12200022121121), we get a palindrome (24312144121342).

The spelling of 12112122000221 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.