12222121200121 has 16 divisors (see below), whose sum is σ = 14311469487744. Its totient is φ = 10219236015744.

The previous prime is 12222121200119. The next prime is 12222121200227. The reversal of 12222121200121 is 12100212122221.

It is not a de Polignac number, because 12222121200121 - 2¹ = 12222121200119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12222181200121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26031916 + ... + 26497261.

It is an arithmetic number, because the mean of its divisors is an integer number (894466842984).

Almost surely, 2^{12222121200121} is an apocalyptic number.

It is an amenable number.

12222121200121 is a deficient number, since it is larger than the sum of its proper divisors (2089348287623).

12222121200121 is an equidigital number, since it uses as much as digits as its factorization.

12222121200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52530000.

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

Adding to 12222121200121 its reverse (12100212122221), we get a palindrome (24322333322342).

The spelling of 12222121200121 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-one".