12200222121121 has 4 divisors (see below), whose sum is σ = 12200641935552. Its totient is φ = 12199802306692.

The previous prime is 12200222121067. The next prime is 12200222121151. The reversal of 12200222121121 is 12112122200221.

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 12200222121121 - 2⁹ = 12200222120609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12200222121151) 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, 209863621 + ... + 209921746.

It is an arithmetic number, because the mean of its divisors is an integer number (3050160483888).

Almost surely, 2^{12200222121121} is an apocalyptic number.

It is an amenable number.

12200222121121 is a deficient number, since it is larger than the sum of its proper divisors (419814431).

12200222121121 is an equidigital number, since it uses as much as digits as its factorization.

12200222121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419814430.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12200222121121 its reverse (12112122200221), we get a palindrome (24312344321342).

The spelling of 12200222121121 in words is "twelve trillion, two hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".