222112120121 has 8 divisors (see below), whose sum is σ = 222246408384. Its totient is φ = 221977875600.

The previous prime is 222112120091. The next prime is 222112120129. The reversal of 222112120121 is 121021211222.

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 222112120121 - 2¹⁸ = 222111857977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222112120121.

It is not an unprimeable number, because it can be changed into a prime (222112120129) 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, 17570015 + ... + 17582651.

It is an arithmetic number, because the mean of its divisors is an integer number (27780801048).

Almost surely, 2^222112120121 is an apocalyptic number.

It is an amenable number.

222112120121 is a deficient number, since it is larger than the sum of its proper divisors (134288263).

222112120121 is a wasteful number, since it uses less digits than its factorization.

222112120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21871.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222112120121 its reverse (121021211222), we get a palindrome (343133331343).

The spelling of 222112120121 in words is "two hundred twenty-two billion, one hundred twelve million, one hundred twenty thousand, one hundred twenty-one".