222120222222111 has 16 divisors (see below), whose sum is σ = 309406113588960. Its totient is φ = 141558352611200.

The previous prime is 222120222222097. The next prime is 222120222222271. The reversal of 222120222222111 is 111222222021222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222120222222111 - 2¹⁴ = 222120222205727 is a prime.

It is a super-3 number, since 3×222120222222111³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120222222011) 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, 12639129840 + ... + 12639147413.

It is an arithmetic number, because the mean of its divisors is an integer number (19337882099310).

Almost surely, 2^{222120222222111} is an apocalyptic number.

222120222222111 is a deficient number, since it is larger than the sum of its proper divisors (87285891366849).

222120222222111 is a wasteful number, since it uses less digits than its factorization.

222120222222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25278277386.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222120222222111 its reverse (111222222021222), we get a palindrome (333342444243333).

The spelling of 222120222222111 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".