12211032220121 has 4 divisors (see below), whose sum is σ = 13955465394432. Its totient is φ = 10466599045812.

The previous prime is 12211032220067. The next prime is 12211032220139. The reversal of 12211032220121 is 12102223011221.

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 12211032220121 - 2¹⁴ = 12211032203737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211032220093 and 12211032220102.

It is not an unprimeable number, because it can be changed into a prime (12211032220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872216587145 + ... + 872216587158.

It is an arithmetic number, because the mean of its divisors is an integer number (3488866348608).

Almost surely, 2^{12211032220121} is an apocalyptic number.

It is an amenable number.

12211032220121 is a deficient number, since it is larger than the sum of its proper divisors (1744433174311).

12211032220121 is an equidigital number, since it uses as much as digits as its factorization.

12211032220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744433174310.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12211032220121 its reverse (12102223011221), we get a palindrome (24313255231342).

The spelling of 12211032220121 in words is "twelve trillion, two hundred eleven billion, thirty-two million, two hundred twenty thousand, one hundred twenty-one".