222120321111 has 12 divisors (see below), whose sum is σ = 345520499688. Its totient is φ = 136689428304.

The previous prime is 222120320987. The next prime is 222120321127. The reversal of 222120321111 is 111123021222.

222120321111 is a `hidden beast` number, since 22 + 212 + 0 + 321 + 111 = 666.

It is not a de Polignac number, because 222120321111 - 2⁹ = 222120320599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120329111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 949232025 + ... + 949232258.

It is an arithmetic number, because the mean of its divisors is an integer number (28793374974).

Almost surely, 2^222120321111 is an apocalyptic number.

222120321111 is a deficient number, since it is larger than the sum of its proper divisors (123400178577).

222120321111 is a wasteful number, since it uses less digits than its factorization.

222120321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898464302 (or 1898464299 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 222120321111 its reverse (111123021222), we get a palindrome (333243342333).

The spelling of 222120321111 in words is "two hundred twenty-two billion, one hundred twenty million, three hundred twenty-one thousand, one hundred eleven".