12210222221121 has 16 divisors (see below), whose sum is σ = 16439705409920. Its totient is φ = 8060456551680.

The previous prime is 12210222221111. The next prime is 12210222221123. The reversal of 12210222221121 is 12112222201221.

It is not a de Polignac number, because 12210222221121 - 2¹¹ = 12210222219073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210222221123) 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 15 ways as a sum of consecutive naturals, for example, 2168415 + ... + 5396523.

It is an arithmetic number, because the mean of its divisors is an integer number (1027481588120).

Almost surely, 2^{12210222221121} is an apocalyptic number.

It is an amenable number.

12210222221121 is a deficient number, since it is larger than the sum of its proper divisors (4229483188799).

12210222221121 is a wasteful number, since it uses less digits than its factorization.

12210222221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240456.

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

Adding to 12210222221121 its reverse (12112222201221), we get a palindrome (24322444422342).

The spelling of 12210222221121 in words is "twelve trillion, two hundred ten billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".