12212200020121 has 4 divisors (see below), whose sum is σ = 12419186461200. Its totient is φ = 12005213579044.

The previous prime is 12212200020113. The next prime is 12212200020131. The reversal of 12212200020121 is 12102000221221.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 12212200020121 - 2³ = 12212200020113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212200020095 and 12212200020104.

It is not an unprimeable number, because it can be changed into a prime (12212200020131) 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, 103493220451 + ... + 103493220568.

It is an arithmetic number, because the mean of its divisors is an integer number (3104796615300).

Almost surely, 2^{12212200020121} is an apocalyptic number.

It is an amenable number.

12212200020121 is a deficient number, since it is larger than the sum of its proper divisors (206986441079).

12212200020121 is an equidigital number, since it uses as much as digits as its factorization.

12212200020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206986441078.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212200020121 its reverse (12102000221221), we get a palindrome (24314200241342).

The spelling of 12212200020121 in words is "twelve trillion, two hundred twelve billion, two hundred million, twenty thousand, one hundred twenty-one".