12121200211 has 8 divisors (see below), whose sum is σ = 12406546944. Its totient is φ = 11836010760.

The previous prime is 12121200197. The next prime is 12121200227. The reversal of 12121200211 is 11200212121.

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 12121200211 - 2²³ = 12112811603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121200191 and 12121200200.

It is not an unprimeable number, because it can be changed into a prime (12121200281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124566 + ... + 199396.

It is an arithmetic number, because the mean of its divisors is an integer number (1550818368).

Almost surely, 2^12121200211 is an apocalyptic number.

12121200211 is a deficient number, since it is larger than the sum of its proper divisors (285346733).

12121200211 is an equidigital number, since it uses as much as digits as its factorization.

12121200211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78641.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12121200211 its reverse (11200212121), we get a palindrome (23321412332).

The spelling of 12121200211 in words is "twelve billion, one hundred twenty-one million, two hundred thousand, two hundred eleven".