12222022222121 has 8 divisors (see below), whose sum is σ = 12969574061760. Its totient is φ = 11492483679952.

The previous prime is 12222022222097. The next prime is 12222022222127. The reversal of 12222022222121 is 12122222022221.

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 12222022222121 - 2³⁰ = 12220948480297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222022222127) 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, 4503322970 + ... + 4503325683.

It is an arithmetic number, because the mean of its divisors is an integer number (1621196757720).

Almost surely, 2^{12222022222121} is an apocalyptic number.

It is an amenable number.

12222022222121 is a deficient number, since it is larger than the sum of its proper divisors (747551839639).

12222022222121 is an equidigital number, since it uses as much as digits as its factorization.

12222022222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9006648735.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12222022222121 its reverse (12122222022221), we get a palindrome (24344244244342).

The spelling of 12222022222121 in words is "twelve trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty-one".