12222220121121 has 8 divisors (see below), whose sum is σ = 16299979622784. Its totient is φ = 8146303683440.

The previous prime is 12222220121099. The next prime is 12222220121249. The reversal of 12222220121121 is 12112102222221.

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 12222220121121 - 2⁹ = 12222220120609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12222220123121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460750521 + ... + 460777046.

It is an arithmetic number, because the mean of its divisors is an integer number (2037497452848).

Almost surely, 2^{12222220121121} is an apocalyptic number.

It is an amenable number.

12222220121121 is a deficient number, since it is larger than the sum of its proper divisors (4077759501663).

12222220121121 is an equidigital number, since it uses as much as digits as its factorization.

12222220121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921531991.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12222220121121 its reverse (12112102222221), we get a palindrome (24334322343342).

The spelling of 12222220121121 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".