12101200000221 has 4 divisors (see below), whose sum is σ = 16134933333632. Its totient is φ = 8067466666812.

The previous prime is 12101200000157. The next prime is 12101200000223. The reversal of 12101200000221 is 12200000210121.

12101200000221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12101200000221 - 2⁶ = 12101200000157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101200000197 and 12101200000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101200000223) 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, 2016866666701 + ... + 2016866666706.

It is an arithmetic number, because the mean of its divisors is an integer number (4033733333408).

Almost surely, 2^{12101200000221} is an apocalyptic number.

It is an amenable number.

12101200000221 is a deficient number, since it is larger than the sum of its proper divisors (4033733333411).

12101200000221 is an equidigital number, since it uses as much as digits as its factorization.

12101200000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033733333410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12101200000221 its reverse (12200000210121), we get a palindrome (24301200210342).

The spelling of 12101200000221 in words is "twelve trillion, one hundred one billion, two hundred million, two hundred twenty-one", and thus it is an aban number.